The Nikon BXA30810 is a protective front cap designed for Nikon Prostaff and Aculon binoculars with 42mm objective lenses. This lens cap can be easily attached to and removed from the front of your binoculars to protect the objective lens element when not in use. The cap is engineered for reliable, convenient protection during storage and transport.

• Fits 42mm objective lenses on Prostaff and Aculon 211 binocular models
• Durable construction for long-lasting protection
• Easy push-on attachment for quick and convenient use
• Protects front lens element from dust, scratches and damage