DescriptionThis is a set of countersink drill bits. Made of HSS material, it is durable and practical. for Wooden planks, Fiberboard, Particle board, Plywood, Plastic, etc. Suitable for DIY, Home and General Building/Engineering Using.Features- Color: As shown. - Material: steel. - Size: 8.5x1x0.3cm - Includes 5/64 inch, 7/64 inch, 9/64 inch, 11/64 inch drill bit and 1pc wrench - Made of HSS material, Durable and practical. - One drill bit can open a variety of sizes, can complete the function that the drill can't such as deburring, chamfering, and reaming. - Perfect for Wooden planks, Fiberboard, Particle board, Plywood, Plastic, etc. - Suitable for DIY, Home and General Building/Engineering Using.