Features 1、Portable Design: The Electric Grinding Pen is compact and lightweight, making it easy to carry and use anywhere, anytime. 2、Wireless Design: This grinding pen features a wireless design for hassle-free operation and maximum maneuverability. 3、USB Rechargeable: With its USB recharging capability, you don/u0027t need to worry its battery, making it perfect for on-the-go use. 4、LED Light Feature: Equipped with an LED light, this grinding pen provides clear visibility even in lowlight conditions, ensuring accurate grinding. 5、AdjustableSpeed Settings: With 5-speeds settings, this grinding pen allows you to choose the right speeds for your specific tasks, offering optimal control and versatility. Specification Suitable for various kinds of stone carving, wood carving, olive carving, plastics carving, glass carving, ceramic carving, drilling and metal surface grinding, engraving, trimming, etc. Features: Portable Design: The Electric Grinding Pen is compact and lightweight, making it easy to carry and use anywhere, anytime. Wireless Design: This grinding pen features a wireless design for hassle-free operation and maximum maneuverability. USB Rechargeable: With its USB recharging capability, you don't need to worry its battery, making it perfect for on-the-go use. LED Light Feature: Equipped with an LED light, this grinding pen provides clear visibility even in lowlight conditions, ensuring accurate grinding. AdjustableSpeed Settings: With 5-speeds settings, this grinding pen allows you to choose the right speeds for your specific tasks, offering optimal control and versatility. Specifications: Type: Set A, Set B (optional) Clamping range: 0.5-3.2mm Speeds: 3000/6000/9000/12000/15000rpm (adjustable) Battery: 3.7V, 2000mAh Item size: 175 * 34mm / 6.9 * 13.3in Package size: 280 * 145 * 60mm / 11.0 * 5.7 * 2.4in Package weight: Set A: 218g / 7.7ounce Set B: 597g / 1.3lb Packing List: Set A: 1 * Engraving Pen 1 * USB Cable Set B: 1 * Engraving Pen 1 * USB Cable 10 * Big SandPaper Loop 12 * Small SandPaper Loop 5 * Wool Polishing Bit 1 * Cloth Polishing Bit 1 * Wool Grinding Bit 10 * GrindingWheel Bit 3 * Steel Wire Brush 3 * Copper Wire Brush 3 * Nylon Brush 2 * PolishingPaste 72 * Resin Cutting Pieces 12 * Sanded Polishing Film 1 * FlapDisc 1 * OilStone 3 * Connect Rod 1 * SelfTapping Rod 4 * Copper Collet 1 * Wrench 2 * Rubber GrindingWheel 10 * CorundumGrindingNeedle 6 * Drill bit 5 * MeshPatch 1 * RubberDisk Package List Set A: 1 * Engraving Pen 1 * USB Cable Set B: 1 * Engraving Pen 1 * USB Cable 10 * Big SandPaper Loop 12 * Small SandPaper Loop 5 * Wool Polishing Bit 1 * Cloth Polishing Bit 1 * Wool Grinding Bit 10 * GrindingWheel Bit 3 * Steel Wire Brush 3 * Copper Wire Brush 3 * Nylon Brush 2 * PolishingPaste 72 * Resin Cutting Pieces 12 * Sanded Polishing Film 1 * FlapDisc 1 * OilStone 3 * Connect Rod 1 * SelfTapping Rod 4 * Copper Collet 1 * Wrench 2 * Rubber GrindingWheel 10 * CorundumGrindingNeedle 6 * Drill bit 5 * MeshPatch 1 * RubberDisk