When you are lining up a shot, clean functional optics are an absolute necessity! Protect your optics from dust and abrasion with the Monstrum Tactical Rubberized Flip-Up Rifle Scope Lens Covers! The spring-loaded Flip-Up mechanism pops open effortlessly when needed and securely tightly in place when not in use. Crafted from durable rubber and polymer materials, they conform tightly around your rifle scope tube, protecting the finish while shielding it from the harsh elements.</p><p> Each package includes one Rubberized Flip-Up Lens Cover. For optimum fit, carefully measure the OUTSIDE DIAMETER of both your rifle scope’s eyepiece and objective bell. Please note that this measurement is different than the diameter of your objective lens.</p><p> Available in a full range of sizes to fit any rifle scope.</p><p> Eyepiece Cover available in:<br> 37-43 mm(1.5-1.7 inch) diameter<br> 43-49 mm(1.7-1.9 inch) diameter</p><p> Objective Lens Cover available in:</p><p> 26-31 mm(1.0-1.2 inch) diameter<br> 31-37 mm(1.2-1.4 inch) diameter<br> 37-43 mm(1.5-1.7 inch) diameter<br> 43-49 mm(1.7-1.9 inch) diameter<br> 49-55 mm(1.9-2.1 inch) diameter<br> 55-62 mm(2.2-2.4 inch) diameter</p><p> Flexible rubber tubing cover design secures snugly around specified range of tube diameters.