Material: The yellow tip is made of brass, wear-resistant, rust-proof and durable Application: Widely used in wood and plastic, accurate positioning, no displacement Drill bit: The high-speed drill bit made of 4241 steel is sharper than conventional drill bit and has a longer service life Accurate: These hinge drill bits reliably and accurately center holes for mounting hinges and other types of hardware Easy to use: The wood chips will be automatically discharged from the holes on both sides of the drill bit, and the drill bit will not be stuck Description There are 5mm and 1/4 inch drill bits for you to choose for boring holes in different sizes. The chip will be automatically removed from these two side holes and the drill bit will not be stuck. It can be applied in wood and plastic drilling. Wear-resistant, rust-proof and durable for long-time use. Features Color: Black. Material: Metal. Size: 11x9x1.5 cm / 4.33x3.54x0.59 inch. 1/4 inch: Drill bit: 1/4; Hole diameter: 6.35 mm. 5 mm: Drill bit: 5 mm; Hole diameter: 5 mm. Comes with 2 different sizes in 1/4 inch and 5 mm to meet your different needs. Package including: 2 * Hinge Drill Bits