Countersink Bits for Wood: The countersink drill set includes 5 sizes of countersink drill bits, and is equipped with 5 spare pilot drill bits and 5 hex wrenches. High Quality Material: The counterbore drill bit is made of High-quality materials, with high hardness, wear-resisting, not easy to break, not easy to rust, and provides excellent cutting ability. The chamfering device is strong and . Adjustable countersink drill bit: Adjustable countersink drill bit with adjustable depth stop collars to flat on the shank with hex wrenches for controlled pilot hole depth and changing or tightening drill bits.ensuring perfectly aligned holes every time. Multi-Purpose: Suitable for home or professional woodworking project, used on wood, plastic, PVC, fiberboard, particleboard, plywood, rubber and more. Drill, countersink and counter bore in . This set comes with 5pcs replacement drill bits. Colour:As Shown Material:Aluminum alloy Package Contents: 1set * Countersink Drill 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.