Grayling Fletching Jig w/Left Clamp Fletch 4 X 90, 3 X 120 Cock-feather out, 3 X 120 Cock-feather down Up to 15 degree shaft rotation Up to 3 degree left or right off-set on the nock Up to 6 degree off-set on the magnet Made of Glass Filled Nylon can be cleaned with anything