Description Essential Beiter tool to assist with application of spin wings, a must have piece of kit and easily stows in kit bag or work box. The Beiter Tri-Liner is used to mark the exact position of vanes (like e.g. Spin Wings™) on arrow shafts up to 7,2mm (9/32″) Nock-out-diameter. With the Beiter Tri-Liner it is easily possible to adjust the position of fletching in relation to the string, as well as the distance to the end of the shaft.
