50mm Binocular/Monocular Objective Lens Caps Internal Diameter 59.4-60.9mm Rubber Cover Set Black (59.4-60.9LC)
Quick take
This rubber objective lens cap set is made for 50mm binoculars and monoculars when your barrel measures about 59.4 to 60.9mm (outside diameter). Buyers like the snug fit and the tethered design that keeps caps attached and out of the way during use, but the biggest risk is choosing the wrong size for your barrel.
Pros and cons
Pros
- Designed to fit most 50mm binoculars (7x50, 8x50, 10x50, 12x50) and other optics with compatible barrel dimensions.
- Tethered rubber helps the caps stay with the binocular/monocular and hang down when in use.
- Flexible rubber cover helps protect lenses from dust, rain, and scratches in everyday conditions.
- Includes a clear sizing approach based on outside barrel diameter for a more secure fit.
Cons
- Fit depends heavily on correct measurement, and caps can feel too tight or too loose if your barrel size is off.
- These are objective covers for the outer barrels, not universal lens caps for every binocular model shape.
What buyers think
Buyer feedback centers on fit quality and usability. Many shoppers report a snug, secure fit when the barrel size matches the intended range, including cases where older caps were less reliable and could come off. Reviewers also mention that the tethered design helps the caps stay attached and behave well during repeated use, and that the rubber has a good balance of flexibility and structure. Overall review evidence is broadly positive for protection and day-to-day practicality, but detailed sentiment about long-term durability is limited.
How to choose the right size (this is the deal-breaker)
These caps are not a “one size for everything” accessory. To get the best results, measure the outside diameter of your binocular or monocular barrels including any armoring. The target range for this model is 59.4 to 60.9mm. The internal diameter is listed around 59mm, so staying within the recommended outside diameter helps prevent a cap that is too loose.
If your optics sit near the edge of the size window, consider that thicker rubber armor or bulkier barrel coatings can change how the cap seats. Buyers who tested close size options report that the slightly larger fit can be noticeably easier and avoids forcing the rubber into place.
Protection and day-to-day use
The rubber covers are meant to shield objective lenses from environmental messes like dust and rain, and to help guard against minor scratches. They are also intended to protect lenses while your binoculars or monoculars are stored or transported.
For convenience, the caps are tethered to the binocular so you are less likely to lose them. Once installed, they hang down while you observe, which reduces the hassle of trying to remove and replace loose caps every time you use the optics.
Compatibility and who these caps are for
These covers are built for most 50mm objective models, including 7x50, 8x50, 10x50, and 12x50 binoculars. They are also described as fitting some binoculars and monoculars with objective barrels in the 48 to 52mm range, plus some scopes, but objective barrel geometry still matters. In practical terms, you should think of this as an objective lens cap solution that prioritizes correct barrel diameter over brand-specific fit.
Best for: Owners of 50mm binoculars or monoculars who want tethered rubber caps for objective protection and easy access while using the optics.
Avoid if: You cannot measure and confirm your barrel’s outside diameter in the 59.4 to 60.9mm range, or if your objective barrel shape does not match how these caps are designed to stretch and seat on the outside housing.
Pros and cons in plain terms
Why people buy these
- To stop losing objective caps, thanks to tethering.
- To get a snug, protective cover that is designed to fit specific barrel sizes.
- To keep caps out of the way during observation.
Main tradeoffs
- Correct sizing requires measurement, not just guessing by “50mm.”
- Because they’re rubber covers for objective barrels, they may not suit every binocular design.
Alternatives to consider
If you are unsure about barrel diameter, your best alternative is choosing a different size in the same cap family (if available) that matches your measurement more closely. If you prioritize maximum weather sealing over scratch protection, look for objective covers designed with a more structured seal, but you will likely trade off ease of removal and fit flexibility.
Verdict
If your binocular or monocular objective barrels measure within 59.4 to 60.9mm outside diameter, these rubber objective lens caps are a practical, easy-access way to protect your glass from dust, rain, and scratches. The tethered design is a clear advantage for everyday use, and the main reason shoppers do not get a good experience is simply incorrect sizing.
FAQs
Will these fit all 50mm binoculars?
No. They are intended for many 50mm models, but fit depends on the outside barrel diameter range (59.4 to 60.9mm for this set). Measuring your barrel is the safest way to confirm compatibility.
How do I measure for the correct size?
Measure the outside diameter of the binocular or monocular barrels, including any armoring or external texture. This set targets barrels in the 59.4 to 60.9mm range.
Do the caps stay on while I’m using the binoculars?
Yes, they are tethered rubber covers designed to remain attached to the barrel and hang down while you use the optics.
What kinds of protection do these provide?
They’re designed to help protect objective lenses from dust, rain, and scratches during weather exposure, plus protection during storage and transport.
Are these for the eyepieces or the objective lenses?
These are objective lens caps, meant to cover the front objective side of binoculars or monoculars by fitting over the outside barrel.
Want to confirm the latest availability and pricing? Buy on Amazon
Specifications
| Product Title | 50mm Binocular/Monocular Objective Lens Caps Internal Diameter 59.4-60.9mm Rubber Cover Set Black (59.4-60.9LC) |
|---|---|
| Category | Electronics > Camera & Photo > Accessories > Binocular Accessories |
| Brand | Generic |
| Manufacturer | Stealth Birding Limited |
| Model Number | 59.4-60.9LC |
| Color | Black |
| Item Weight | 30 Grams |
| Features | Lightweight |
| Objective Lens Diameter | 50 Millimeters |
| Magnification Maximum | 12 x |
| Coating | Scratch-Resistant |
| Water Resistance Level | Water Resistant |
| Compatible Devices | Most 50mm models including 7x50, 8x50, 10x50, 12x50 binoculars, some binoculars/monoculars with objective lenses between 48-52mm, and some scopes. |
| Enclosure Material | Rubber |
| Size Map | Full Size |
| Age Range Description | Adult |
| Manufacturer Part Number | LCV |
| Age Range (Description) | Adult |
| Special Feature | Lightweight |
Available variants
Size
- 48.5-50mm
- 53.8-55.8mm
- 57.5-59.4mm
- 42.6-43.6mm
- 47.5-49mm
- 69.7-74mm
- 61.5-64mm
- 32-34mm
- 59.4-60.9mm
- 44.3-45.3mm
- 37-38.2mm
- 64.4-67mm
- 54.5-57.5mm
- 46.5-48mm
- 66.5-69.7mm
- 43.1-44.8mm
- 60.9-63.2mm
- 45.3-46.5mm
- 51.8-53.3mm
- 40.8-43mm
- 50.5-51.8mm
Recommended next
OP/TECH USA Bino/Cam Harness with Quick Release – Dual Camera Shoulder Strap – DSLR Camera Strap – Binocular Harness for Hiking – Elastic,Black - Made in USA
The OP/TECH USA Bino/Cam Harness with Quick Release is a self-adjusting shoulder harness designed to carry either a camera or binoculars in front of your body for easier access during hikes and other active outings. Its key strengths are stable, weight-distributing carry and quick-disconnect connectors for switching setups, but the connector fit and stiffness may take some trial to get used to.
25mm Binocular/Monocular Objective Lens Caps Internal Diameter 36.6-38.1mm Rubber Cover Set Black, 37-38.2mm
These rubber, tethered objective lens caps are designed for 25mm binoculars/monoculars where the outer barrel diameter (including armor) lands in the 37-38.2mm range (internal diameter 36.6-38.1mm). Buyers like the snug fit, smooth edges, and the way the tether keeps the caps from disappearing in storage. The main caveat is fit accuracy, so measure your barrel diameter before ordering.
KUIU PRO Bino Harness – Waterproof, Adjustable, One-Hand Lid, Custom Foam Shims, Hydration Rig Compatible Binocular Harness
The KUIU PRO bino harness is a purpose-built carry solution for hunters who want a stable, lightweight platform for binoculars and thermal units. Buyers highlight the adjustable fit, protected shell with a comfortable interior, and useful storage for batteries and cables, with one recurring gripe about a front pocket that can be difficult to access.
TIDEWE Binocular Harness Chest Pack with MOLLE System, 2 Detachable Pouches, Silent Magnetic Closure, Lightweight & Waterproof Bino Harness
The TIDEWE bino chest pack is a lightweight, adjustable harness designed to keep binoculars close and reduce arm fatigue. It includes a silent magnetic main compartment plus modular MOLLE storage with two detachable pouches, making it a practical pick for hunting, hiking, and birdwatching, with the main tradeoff being limited adjustment for smaller builds.