Features 1、Reliable Drilling: The drill bit tip adopts cemented carbide with HRC 50‑54 high hardness, which ensures efficient cutting performance. 2、Adjustable Design: Equipped with drill stop, the counter sink drill bit enables easy adjustment on the drilling depth, meeting your needs. 3、Wider Application: Suits perfectly for wooden boards rather than black metal, such as wood, MDF, particle board, dense plywood and so on. 4、Great Alloy Steel: Adopting premium alloy steel material, this drill bit that has been through excellent workmanship has great durability. 5、Simple to Install: Comes with a compact size and a light weight as well, the 8x8x3.5 countersink drill bit is very convenient to install. Specification Item Type: Countersink Drill Bit Material: Alloy Steel Specification: 8x8x3.5 Package List 1 x Countersink Drill Bit 1 x Hex Wrench 1 x Wrench 1 x Screw 1 x Storage Box