12V mini blue electric grinder (with battery) + send 10 grinding heads.
220V mini electric grinder (connected to home appliances) + send 13 grinding heads
You are in need of such an electric grinder! Even if there is no power in the field, it can work. It only needs the clip of the power cord to be clamped on the car battery to work. Quick-free chain removal; 220V connected to household electricity, convenient and fast; fine sand type high-quality grinding head; professional angle plate, precision grinding chain; adjustable speed switch, stepless speed change; fine chuck, better concentricity, tighter lock is good