Bohning Cauldron Fletching Station The Complete Cauldron includes inserts for Straight (gray);3? right helical (black), 3? left helical (purple);1? right offset (red);1? left offset (orange);With this jig you can leave the nock on your arrow so you don&';t need to change the center posttable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; } Item Category Code: 1200 Product Group Code: 1200A Product Sub Group 1: 1200A1 Inactive: No