Bitzenburger FletchingJig Base Straight. The precision of these Fletching Supplies by Bitzenburger is remarkable; you can create a helical or straight fletch with the same jig. For fletching carbon arrows with vanes you need a top of the line jig like the Bitzenburger FletchingJig Base. Each bitzenburger FletchingJig Base comes with a clamp that will add a few percentage points to your helicals not to mention the precision of the jig itself. This means that you'll get the best results and the longest arrow life imaginable. Get the Bitzenburger FletchingJig Base for your arrow fletching needs. Specifications for Bitzenburger FletchingJig Base: Manufacturer: Bitzenburger Color: Stainless Condition: New Package Contents: Bitzenburger FletchingJig Base Die cast jig frame with shaft cradle permanent magnet top and bottom adjustment dials nock receiver index setting screws nock receiver holding screws and a standard nock receiver which determines the positioning of the fletching. Top and bottom adjustment knobs can be set to provide a straight fletch or to increase or decrease a diagonal fletch. Left and right clamps provide a left or right helical fletch. Feathers or vanes can be accurately spaced for 3-fletch-120 4-fletch-75 X 105 4- fletch-90 or 6-fletch-60. elect the standard straight right or left nock receiver when choosing your jig. Base and clamp sold separately.