Specifications Material Industrial grade High Speed Steel HSS Finish Type Black OxideDimensions L x W x H 5 9 x 3 9 x 1 85 inchesTool Flute Type SpiralCountersink Drill Sizes 7 64 9 64 11 64 3 16 7 32Wood Plug Cutter Sizes 1 4 3 8 1 2 5 8 Features 1 Premium Material for Longevity Crafted with industrial grade high speed steel and nitride treated surface finish this set minimizes wear and optimizes performance compared to standard carbon steel drill bits 2 Adjustable Depth Control Easily adjust drill lengths using the included allen wrench to achieve precise pilot holes and countersinks tailored perfectly for your woodworking projects 3 Efficient Design for Smooth Application Each countersink drill bit features sharp cutters and an 82 degree counterbore angle ensuring fast smooth drilling and an aesthetically well finish in both hard and soft woods 4 Versatility Across Applications The set is compatible with hand drills bench drills and electric drills catering to various tasks like cabinetry building furniture making and general carpentry 5 Comprehensive Woodworking Toolkit Includes countersink drills wood plug cutters screwdriver bits and essential tools ensuring you have everything you need for your complete woodworking project in one box Package Included 5 x Countersink Drill Bits Sizes 7 64 9 64 11 64 3 16 7 32 4 x Wood Plug Cutters Sizes 1 4 3 8 1 2 5 8 2 x Replacement Drill Bits Sizes 7 64 9 64 2 x Screwdriver Bits Sizes