Features 1、Excellent Alloy Steel Material: This counterbore drill bit features M2 HSS tapered guiding bits available in sizes of 9/64in and 3/8in. Specifically designed for screws, the 82° countersunk bits ensure a good fit for US standard screws, delivering clean, professional results with every use. 2、Accurate Cutting: The 82° incisive tungsten steel alloy cutting edges of the woodworking counter sink drill bit guarantee slick, no burr cutting performance. This exceptional design makes them suitable for use with both sheet metal screws and machine screws, providing an excellent finish on your projects. 3、Adjustable Depth Control: Both the drilling depth and countersinking depth can be easily adjusted using the hex screws and depth control stop. This feature offers maximum versatility for a wide range of applications, allowing you to achieve accurate results tailored to your specific needs. 4、Versatile Material Compatibility: This countersink drill bit excels at cutting through various materials, including nature wood, particle board, medium density fiberboard (MDF), plywood, aluminum, non ferrous metals, sheathing materials, and high density polyethylene (HDPE). This versatility makes it a valuable addition to any toolbox or workshop. 5、Wide Application: This adjustable depth countersink drill bit has a wide range of applications and can be used for woodworking, metal working, construction work, handwork and so on, which is very practical and convenient. Specification Item Type: Countersink Drill Bit Material: Alloy Steel, M2 HSS Specification: Approx. 3.6 x 10mm / 0.14 x 0.39in Package List 1 x Countersink Drill Bit 1 x Wrench 1 x Storage Box