characteristic: Our countersunk drill is made of alloy, which ensures its high hardness and durability and provides excellent cutting ability. Easily adjust the drilling depth of countersunk bit and screws of lengths. Meet all your DIY needs. Suitable for most woodworking projects, such as cork, hardwood, fiberboard, plywood, plastic and PVC. Not suitable for metal or steel plate. Small size, easy to carry describe Name: woodworking countersink drill set Material: alloy colour: As Shown Package Contents: 1 x Woodworking countersink drill set Only the above package content, other products are not included. Note: Light reflection 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.