Du-Bro Hinge Slotter Kit takes the hassle out of slotting control surfaces for gluing hinges. The centering/parallel guide centerd hinge slotter on up to 3/4" material. Four handle set plus guide and centering tool for three different size slotting forks: mini, standard and heavy duty hinges. Designed to work with all Du-Bro hinges. The 3 slotters and the "picker" are permanently mounted to red nylon handles. Packedged in reusable, recyclable clamshell storage blister.