No archery toolbox should be without this handy tool. Cabelas Bow Square features four tools in one. Bow square features a ruler for accurate measurement and nock placement and measures the bows brace height and tiller. Two-, three- and four-blade broadhead wrenches allow you to safely install and remove your broadheads. Three different nock wrenches make installing and turning your nocks for perfect alignment a snap. Built-in string separator for easy peep installation.Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Bow Squares.