8pcs Aluminium Alloy Self Centering

Specification: Material: Aluminium alloy Twist drill: HSS Shank diameter: 1/4" 8pcs in 1 set : 5/64'',7/64'',9/64'',9/64''11/64'',5'',13/64'',1/4'' Features: Made of high quality material, high hardness, rustproof, solid and durable. Accurate drilling exact pilot holes in cabinet door hinges, door butts, handles, drawer slides, and more. High-speed drill centered for perfect pilot holes, making it easy to drill precise holes, high working efficiency. The chips will automatic discharge from the hole on either side of the top of the drill, not stuck drill Widely used for drilling pilot holes in cabinet and door hinges, door butts and all large and small hardware.