[Accurate]This drill has a shank and tip diameter of approximately 1/8 inch, an overall length of approximately 2.35 inches, and a depth of cut of approximately 3/4 inch, the dimensions are calculated to make the drill fit your tool and provide ideal grip during use. [M2 High Speed Steel]This drywall cutting tool is made from M2 high speed steel for excellent durability and long lasting use even in demanding cutting applications. [Deep Cutting Capability]The drywall drill cuts up to 3/4 inch deep and the wood drill cuts up to 1 inch deep; this makes it more versatile and provides excellent control and precision in every cut. [Multi-Functional]Whether it's for DIY woodworking, drywall repairs, construction tasks or simple detailing projects around , this drywall cutting drill kit has you covered; it works smoothly on a wide variety of materials such as wood, plastic, and gypsum boards. [Wide Applications]These bits are not only for cutting drywall, but can also cut through a variety of materials including acoustic tiles and formwork; it's also ideal for cutting around outlet boxes, framing or shielded lights. Colour:silver Material:M2 high-speed steel size:3.15mmx60mm Package Contents: 50 * Drywall Bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.