Compact size, one-handed operation, easy to carry and easy to use. Stainless steel body, high hardness, with end durability. Glued-on design 3 jaws to hold 0.3-3.2mm grinding. Two way rechargeable design, can be recharged by 5V and 3.7V charging base. Suitable for engraving wood, egg, cutting piece of wood, drilling holes, grinding wood, metal, polishing wood, metal, plastic and etc. Product name: charging and inserting dual-use small electric grinders Output voltage: 3.7V Clamping range: 0.5mm-3.2mm Speed: about 18000r/min Battery: 18650 Anal battery*2 (not included) Features: Compact size, one-handed operation, easy to carry and easy to use.< /p> Stainless steel body, high hardness, with fine durability. The grinding head can be replaced easily by inserting a does not key in the fixed hole. 3-jaw glued design to hold 0.3-3.2mm grinding. Meet the ergonomic design, non-slip texture for the neat convenient. Compass design on the tail, more convenient and increase funky. Using the fuselage integrated rotation axis, with a three-jaw chuck precise, effectively from chuck jitter jitter, clamping stability will not decrease, drilling and grinding process with higher concentricity. Multi-function, perfect for polishing cut-off engraving of drilling. Works with different grinding heads to adapt to more scenarios. Suitable for engraving wood, egg, cutting piece of wood, drilling holes , grinding wood, metal, polishing wood, metal, plastic and etc. Two way rechargeable design, can be charged by 5V and 3.7V charging base. < p>Storage box ent made of solid wood for easy storage and also prevents missing accessories. Note: 1. Please allow 1-3cm differs due to manual measurement. 2. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.Please refer to the product received.Thanks for your understanding.