The bead drilling tool is made of metal material, which is very , anti-corrosion and anti-rust. Specially designed for handling beads. This perfect round bead carved with any wood. Design your own jewelry, DIY handicrafts, home decoration and more! Each ball is perfect, just a little bit of sanding or polishing. Superb workmanship, easy and fast;Professional design is very suitable for woodworking;Easy to use. specification: Handle diameter: 10mm Weight: 215g colour: golden + silver Material: metal size: 6/8/10/12/14/15/16/18/20/22/25 mm Package Contents: 11 x Blade 1 x handle 11 x Cores 1 x Wrench Only 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.