For the Keller Dovetail templates and certain Incra applications, 7° dovetail bits are required. (Bits for the Keller system are supplied with shank-mounted bearings.) this angle is also used in cutting Stair stringers., #45808, diameter (D) 5/8, angle (a°) 7°, cutting height (B) 7/8, shank (D) 1/2, overall length (L) 2-5/8, type Incra, flutes 2, Carbide Tipped Dovetail 7 deg x 5/8 dia x 7/8 x 1/2 inch shank