These are hinge slotting blades for heavy duty hinges use with the slot machine hinge slotting tool.
Features: Suitable for use with Great Planes, Dubro, Sig and Klett heavy duty hinges
Includes: Two heavy duty hinge blades
Requires: A slot machine hinge slotting tool
Top of teeth to bottom of blade: 1-5/8
At widest point: 1-1/8
Mounting Holes (Center to Center): 3/4
Teeth per blade: 10
Note: Refer to Great Planes slot machine instruction manual for blade replacement instructions.