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 12 inch (305mm) CARCASE SAW, BRASS, 1/4 x 3/4 inch (6.35 x 19mm), Slot Depth 0.300 inch (7.62mm), for Blade Thickness of 0.020 inch (0.508mm)