Overall Length: 1-1/4" 
Built in alignment slot allows you to match up dowel holes that are spaced further apart for perfectly aligned dowel holes
Magnets hold widgets securely in place
A metric and imperial depth scale is provided for thickness adjustment
Plate opening is 3-1/2"
Dimar WPF-52 - 2 1/16" Dia, HSS, Forstner Bit, 5/16" Hex Shank, 3 1/2" Length Carbide Tipped Router Bits Overall Length: 1-1/4" Woodpecker's Forstner Bits are ideal for producing flat bottom holes on an irregular surface, Ornamental Edging, Mortising, Counterbore Holes, and Pocket holes. The bit incorporates a sawtooth style and wave form side clearance for tear free accurate holes. The modified head of the bit reduces friction resulting in cooler boring and longer tool life. Use on CNC Boring machines, Hinge Boring Machines, and Special Boring machines. Cuts most Softwood,