Makita HP2050FX 3/4-Inch Hammer Drill with 9557PB 4-1/2-Inch Grinder 3/4" Hammer Drill 6.6 Amp 2-Speed Switch Selector Within the 2-speeds, there is a vaiable speed dial to match speed up to application 9557PB Grinder (7Amp) Comfortable Paddle Switch Eliminates User Fatigue for Extended Use