Features: All-in-1 Tool Set: perform a variety of tasks, including drilling, grinding, sharpening, sanding, polishing and engraving. Equipped with a broad range of accessories that can be installed on electric rotary tools such as grinders, electric drills. Mini Grinder: suitable for middle-sized and microscopic carvings, can be applied to handle ceramic, porcelain, plastic, metal, stone, modeling clay, walnut, wood and more smooth workpieces. Multiple Attachment Kit: comes with a variety kinds of attachments kept in a small plastic box, which includes different kinds of drill bits, grinding stone bits, felt bis, sanding drums, cut-off wheel, mandrels and collets. USB Rechargeable: built with Micro-USB port and rechargeable lithium battery for super convenient charging and cordless operation. 5 Speed Level: adjustable different speeds meet more fine and delicate work. Compact & Lightweight: small enough to be held like a pen, which is easy for one-handed operation. Specifications: Color: Orange / Gray (Optional) Material: ABS Orange: Voltage: 4.2V Speed: 7/8.5/10/11.5/13*1000rpm Item Size: 192 * 33 * 30mm / 7.56 * 1.30 * 1.18in Item Weight: 142g / 5.02oz Package Weight: 378g / 13.33oz Package Size: 22.7 * 12 * 5.7cm / 8.94 * 4.73 * 2.24in Gray: Voltage: 3.7V Speed: 3/6/9/12/15*1000rpm Collet Size: 3mm Item Size: 178 * 33 * 30mm / 7.01 * 1.30 * 1.18in Item Weight: 128g / 4.52oz Package Weight: 256g / 9.04oz Package Size: 21 * 7.2 * 5.5cm / 8.27 * 2.83 * 2.17in Packing List: Orange: 1 * Grinder 1 * USB Cable 1 * Sanding Drum Mandrel 1 * Wheel Mandrel 1 * Felt Mandrel 2 * Cut-off Wheel 2 * Polishing Bit 4 * Twist Drill Bit 5 * Diamond Bit 5 * Stone Grinding Bit 6 * Collet 28 * Sanding Sleeve 1 * Accessory Case 1 * Zipper Case 1 * Manual (English) Gray: 1 * Grinder 1 * USB Cable 1 * Sanding Drum Mandrel 2 * Wheel Mandrel 1 * Felt Mandrel 3 * Cut-off Wheel 3 * Diamond Cutting Wheel 4 * Twist Drill Bit 5 * Diamond Bit 7 * Stone Grinding Bit 5 * Collet 10 * Sanding Sleeve 1 * Accessory Case 1 * Manual (English)