Traditional style fletching jig with a special nock receiver designed to accept crossbow bolts. Will work with either half moon or flat cap designed nocks. The Pro Class jig has a quick-set magnetic clamp with larger grips for easy operation. Features simple off-set adjustment & accurate snap indexing. don't spend a mint to get perfectly fletched arrows! Choose Straight, Right or Left. Pro Class offers total flexibility and versatility...fletch with the nock in place, and set your own degree of offset! Accommodates shaft sizes small (13/64) to large (27/64) and vanes or feathers up to 5".