It is a professional tool for cutting， engraving， milling， grinding， drawing， trimming， polishing， removing and drilling. It's designed for application of stainless steel， porcelain， stone， glass， plastic， wood， aluminum gift， bracelet， etc.Features:The electric grinder engraving kit is necessary for DIY carving and grinding. Suitable for metal agate nuclear carving wood carving.Equipped with nearly all the accessories for drilling， all ready and complete.Manual sculpture， polished jade， stone， glass， wood， computer case， circuit boards， PC material drilling.Low power and long using life electric drill.Perfect electric grinder for cutting， engraving， milling， grinding， polishing， removing and drilling.Specifications:Color: Black Speed: 12000 RPMCollet Size: 1.0mm，1.5mm，2.0mm，3.0mm，3.2mmFrequency: 50HzType: Drill， PolisherPlug Type: EUInput Voltage: 110-240V AC Voltage of Electric Grinder: 12VPower: 30WSpeed Regulation: 1 SpeedLength of Electric Grinder's Wire: Approx. 1.2m / 47.2inLength of Transformer's Wire: Approx. 0.95m / 37.4inItem Size: Approx. 12.5 * 4.5 * 4.5cm / 4.9 * 1.8 * 1.8in (Electric Grinder)Item Weight: Approx. 112.5g / 3.9oz (Electric Grinder)Package Size: Approx. 22.2 * 14 * 5cm / 8.7 * 5.5 * 2.0inPackage Weight: Approx. 388.6g / 13.7ozPackage List:1 * Electric Grinder 1 * Transformer20 * Grinding Needle 11 * Abrasive Stone2 * Sanding Drum4 * Sanding Band4 * Wool Felt1 * Wool Felt Connecting Rod30 * Resin Slice1 * Resin Slice Connecting Rod4 * Drill Bit(1.0mm，1.5mm，2.0mm*2)5 * Collect(1.0mm，1.5mm，2.0mm，3.0mm，3.2mm)1 * Copper Flat Brush1 * Silver Flat Brush1 * Brown Pen Brush1 * Safty Glasses1 * User Manual