Features: 1.The grinder engraving kit is necessary for DIY carving and grinding 2.This electric polishing kits has polishing wheel, polishing head, chuck etc. Complete tools set are complete for easy operation 3.This electric carving tool has very mini grinder body, convenient to use 4.Small size, light weight, easy for carrying 5.You can use it for DIY polished engraving, milling, grinding, polishing, removing and drilling specification:Description: This is a mini portable electric grinder with several different sizes of chucks for multiple works. It is available on the crystal, stone, glass, agate, jade, copper and aluminum and other soft metal surface lettering, carving or engraving. You can use it for DIY crafts. Come and have a try. The grinder engraving kit is necessary for DIY carving and grinding. This electric polishing kits has polishing wheel, polishing head, chuck etc. Complete tools set are complete for easy operation. This electric carving tool has very mini grinder body, convenient to use. Small size, light weight, easy for carrying. You can use it for DIY polished engraving, milling, grinding, polishing, removing and drilling. s: Optional Plug: EU / US Plug Voltage: 100-240V Input Power: 20W No Load Speed: 12000RPM Color: Army Green Copper Collet Diameter: 0.5mm, 1mm, 1.5mm, 2.5mm, 3mm Grinding Head Diameter: 3mm Electric Grinder Pen Size: Approx. 13.5 x 3.5 x 3.5cm / 5.31 x 1.37 x 1.37inch Accessory Case Size: Approx. 7 x 5 x 2cm / 2.75 x 1.96 x 0.78inch Weight: Approx. 281g Package Included: 1 x Electric Drill 1 x Power Adapter 5 x High-speed Steel Drill Bit 4 x Grinding Head 2 x Sand Circle Paper 5 x Copper Collet Notes: 1. Please kindly make a note if you need any adapter. 2. Please allow small error due to manual measurement. Thanks for your understanding.