Smooth Back, Bevel Edge - 4" Length x 5/8" Width x 1/8"** Thick - Set of 3 Knives. Fits Atlas, Boice, Crane, Old Craftsman, Jet JJ-4 & other jointers.

**Make sure you measure the thickness, some of the machines has 3/32 thick blades.  1/8" thick blades will not fit into a head that is made to accept 3/32"