Built-in 8 components, metric size: 6mm, 10mm, 13mm, 16mm, inch size: 1/4, 3/8, 1/2, 8/5 (inch). < p>Woodworking tools for making holes and taking round plugs. Recommended for bench drills, hand drills and bench drills! Please control the speed when using it. The speed should not be too fast, otherwise it is easy to produce smoke and become black. 4 standard cork drill bits + 4 claw cork drill bits, a variety of specifications can meet your different needs. Specification: Condition: 100% Brand New Material: Carbon Steel Color: Silver< /p> Size: - Metric Size: 6mm, 10mm, 13mm, 16mm - Inch Size: 1/4, 3/8, 1/2, 5 /8 (inch) Handle Diameter: 8mm Weight: approx. 260g Package includes: 4 x Standard plug cutter 4 x Four-tooth bevel cutter