Description :
3mm Ceramics Gems Engraving Carving for Rotary Tool Drill
20 assorted shapes ideal for grinding， scribing， sharpening etc andProfessionals craft For materials such as Glass， Cristal， Ceramics，Metals， Rocks， Gems， Carbide， Brick， Steel， Wood EtcComplete in plastic storage case
Specification :
Heads Shapes: Sphere， cylinder， bullet， or needle sharpShank diameter: 3mm (About 1\/8 inch)Total length: 45mm
Package included :
1 x 20 pcs Carving Rotary Tool Drill
Details pictures :