Specifications:

4 inch brushed bare metal

4-inch brush, one electric charge

4-inch brush, two electric charges and one charge

4 inch brushless bare metal

4-inch brushless, one electric and one charge

4-inch brushless two-power one-charge

6-inch brush, one electric charge

6-inch brush, two electric charges and one charge

6-inch brushless, one electric and one charge

6 inch brushless two electric one charge

8-inch brushless, one electric and one charge

8-inch brushless two-power one-charge