Mult-Equip 60 pcs Rotary Mini Drill Rechargeable Hand dril for pcb woon polishing grinding engraving carving drill hand tool drill machine with adapter Specifications: -Voltage:3.6V -No-Load speed: 10000r/min -Charging time: 3-5 hours -Working for engraving, polishing, cutting, sanding, drilling and more. -Package: color box, double blister, plastic box, tool bag, blow moud case or your customized package. Voltage: 3.6V Working: engraving, polishing, cutting, sanding, drilling and more No-load speed: 10000r/min Charging time: 3-5 hours