Achieve perfect hole alignment with our hinge drill bit set, designed for precise hole centering, eliminating guesswork and ensuring impeccable hardware installation. Crafted from high-speed steel with a wear-resistant brass tip, these self-centering drill bits are exceptionally durable and sharp. The dual side holes in the bits effortlessly clear away chips as you work, maintaining a clean workspace for uninterrupted precision. With an innovative design for better punch effect and automatic sawdust discharge, these drill bits improve your DIY projects on various materials. Choose from 5mm and 1/4" (6.35mm) bits for versatility.Features:The yellow tip is made from high quality brass which is wear-resistant, rust proof and durable.High speed steel 4241 drill bit is sharper and has a longer service life than traditional one.These hinge bit can reliably and accurately center the holes for mounting hinges and other types of hardware.Widely used on wood and plastic, chip will be removed automatically from these two side holes.There are 5mm and 1/4inch drill bits that you can choose for boring holes in different sizes.Specifications:Material: High speed steel 4241, brassColor: As pictureDrill Bit Size: 1/4'', 5mm(Optional)Hex Shank Size: 1/4''Package Includes:1 x Hinge Drill Bit