This is a Hinge Slotter Kit from Dubro.

• Takes the hassle out of slotting control surfaces for gluing hinges.
• The centering/parallel guide, centers hinge slotter on up to 3/4" (19mm) 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 Dubro hinges.
• The 3 slotters and the picker are permanently mounted to red nylon handles.

• One Hinge Slotter Kit.