The Jo Jan mono fletching jig has an aluminum frame and plated steel clamp with spring and ball bearing construction make this a lightweight but dependable fletcher. The positive position knob with interchangeable indexer allows for 3 or 4 fletch. The nock receiver fits all nocks. One RW helical clamp included. Note: Straight clamps also available separately great for fletching medieval arrows or clout arrows to gain that bit of distance!