PREMIUM QUALITY - The bead drill tools made of alloy steel material, which is high hardness, corrosion resistance and anti-rust.Designed for processing bead balls. OPTIONAL SIZES - There are different sizes of bead mold included: 14/15/16/18/ 20/22/25 mm blade + 1pc shank + 1pc 1.5mm core + 1pc 1.8mm core + 7pc 2mm cores + 1pc screwdriver + 1 yellow plastic sleeve.Choose from different sizes of cutter for different sizes beads to make it perfect. CONCAVE MILLING CUTTERS - These high quality C-shaped carbide milling cutters can accurately drill holes in any wood,perfect with ebony, rosewood, deft knots,mahogany, sandalwood blood and so on.Each ball comes out almost perfect that you just need to sand or polish. PORTABLE TO USE - This wooden bead maker set is rather lightweight hand drill,which is small and portable to use.It can fit into many tool bags and convenient to take it anywhere. DIY WOODWORKING DESIGN - Our wooden beads drill bit can make a warm gift for jewelry, DIY handicrafts, bracelets, necklaces and home decors accessories with some beads.Your handicrafts gifts will be more appreciated when they're made with love.