Glass filled nylon construction includes a 3x120 cock vane down fletch plate, a 3x120 cock vane out fletch plate and a 4x90 fletch plate and your choice of one fletching clamp. Clamp attaches to jig with a magnet, degree of offset is adjustable and a 15 degree rotation of the shaft can be made to choose how your arrow is nocked. Any Grayling clamp can be used with this jig. Order No