FTG USA Adjustable Wood Countersink Set #8 (11/64"), #10 (3/16") with Tapered HSS Drill Bit, Quick change 1/4" Hex Shank, with 1 replacement tapered drill bit for each size, 2 piece adjustable depth stop collar 3/8", 1 hex wrench (1/8" Allen Key) and 1 storage container. Tapered drill bits for wood with 1/4" hex shank. Super sharp, very durable, easy to use, and built to perform well in both hard and soft woods Drill, countersink, and counter-bore in 1 step. Top quality material #45 Carbon Steel adjustable four-cutter counter bore, chamfer angle 82 degree, attachment that cuts fast and clears chips quickly for fast, smooth countersinking applications. Replacement Countersink Tapered Drill Bits are available on FTG USA Brand store. This product is designed in Bloomfield, New Jersey by Fair Trade Group USA and Professionally manufactured in China at FTG USA specifications. Packaging set combination/design protected by US Copyright Office