Vortex Defender Flip Cap, Eyepiece - Fits 24mm Objective brand_-Caterpillar Quad hex rail fixings (4mm)

Quad hex rail fixings (4mm) provide a positive

torqued to 45-50 in-lbs at the base and 15-18 in-lbs on the ring caps

abrasion-resistant

lightweight boot is preferred over a full-height style

backed by a waterproof membrane lining that keeps feet dry when the going gets muddy underfoot

Vortex Defender Flip Cap, Eyepiece - Fits 24mm Objective brand_-Caterpillar Quad hex rail fixings (4mm)This is the last flip cap you will ever need! Virtually indestructible, this cap will fit snugly on nearly all Vortex Optics and features a snap flat spring that will keep your line of sight unobstructed. The E 10 fits all Vortex Riflescopes except the 1 inch tube Viper model VPR M 01BDC, VPR M 04BDC, VPR M 03BDC and Viper HS 4 16x44 model VHS 4305 and VHS 4304. Outside diameter: 41. 5 46 mm 1. 6 1. 8 inches