This fletcher is made of durable, glass filled, nylon with a magnetic clip. It has an adjustable clamp angle for any offset/helical. The fletcher has the ability to fletch 4X90 degrees and 3X120 degrees as well as cock fletch out or down. The nock receiver works for all clamps/arrow sizes. An adapter is included for crossbow bolts. Available in left helical clamp only at this time. This is a nice economical fletcher.