Amana Countersink Amana 203361 Carbide Tipped 2 Wing Boring Bit W/ Spurs W/ Adjustable 35mm Forstner Bit Boring machine bit and boring drill bit presses. Carbide Tipped 2 Wing Quick Release Boring Bit with Spurs with Adjustable Depth-Stop and Quick Release Hex Shank. Carbide Tipped with center point DRILL CLEAN HOLES – Use the boring drill bits for wood and boring drill bits for metalworking, they provide clean and accurate hole cutting every time. Amana Tool is an industry leader for over 50 years, specializing in industrial quality cutting tools 2 WING BORING BIT – The Amana Tool Carbide Tipped 2 Wing Hinge Boring Bit allows you to bore a recess into your workpiece for cup hinges to be installed. 5pc Diameter 15,20,25,30,35mm Adjustable Carbide D... – Vicedeal ADJUSTABLE DEPTH-STOP – The hinge drill bit features an adjustable aluminum depth-stop that allows controlling the depth of blind holes., Depth range 3/8 (9., 52mm) to 1/2 (12., 7mm).