NEW Level Head sight ring is far easier to adjust, far more secure; levels can be customized to fit into the top of sight ring. Product details: NEW indicator needle is more precise, better protected; indexable for easy re-sighting should your set-up change. Splined vertical drive gear increases durability by 80% and provides a quieter, more solid feel! High performance PhotoChromatic shell - 80% tougher, changes colour faster. More range and adjustability than traditional hunting moveable sights. 54 sight tapes included choose the one that’s right for you! Exclusive first axis adjustment keeps sight dialed in at long ranges. Works great with one-piece quivers (unlike most moveable sights). Quick, smooth and quiet adjustment. Sculpted base with oversized clamping dovetails.