Austrian made, tool steel bit with dual rim lips and wide chip gates which don't bind up. These cut a hole as cleanly as forstners and are easier to hone and sharpen.
Spine, Stiffener, for 10 inch (254mm) DOVETAIL SAW, BRASS, 1/4 x 5/8 inch (6.35 x 15.88mm), Slot Depth 0.300 inch (7.62mm), for Blade Thickness of 0.018 inch (0.457mm)