For wood perforation, spherical door head installation, drawer tip, plastic products, wood, plywood and so on.Sharp edge, high hardness, accurate positioning, high precision, smooth cutting, impact resistance, high toughness.When a clean, precise bottom is made into a hole, the carpenter does not drill through the material.Blade is more sharp and durable, the head curved curve design, is conducive to chip removal, perforation efficiency.Suitable for hand-held drill, vertical electric drill and mobile belt magnetic drill.The main material: solid hardening steelBlade material: alloyColor: yellow + blue + silverShank diameter: 6.35mm (1/4 inch)Head length: approx. 3/8 inch (9.52mm) and 1/2 inch (12.7mm)Total length: 46mmPackage Included:1 x -slot tool router head for 1/2 inch hex bolts1 x -slot tool router for 3/8 inch hex boltsOnly the above package content, other products are not included.Note: Light 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.