An 80pc assortment of different sized woodruff keys. They are half moon keys and there are no burrs on the surface, ensuring a smooth operation. They are semi-circular machine shaft keys that prevents gears, hubs or other components from moving independently of a rotating shaft or spindle. Sizes are listed below: 10pcs (3 x 5 x 13mm); 10pcs (4 x 5 x 13mm) 10pcs (3 x 6.5 x 16mm); 10pcs (4 x 6.5 x 16mm) 10pcs (4 x 7.5 x 19mm); 10pcs (4 x 7.5 x 19mm) 10pcs (5 x 9 x 22mm); 10pcs (6 x 9 x 22mm).
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