"The Milwaukee 4 1/2in. 11 Amp Grinder delivers best in class durability and power. High-capacity 120V motor with Advanced Airflow system runs at 11,000 RPM to handle the most demanding grinding jobs. Paddle grip with non-locking paddle switch. Length in. 11 1/2, Wheel Included No, Product Type Handheld, Spindle Lock Yes, Wheel Diameter in. 4 1/2, Switch Type Nonlocking paddle switch, Wrench Included Yes, Spindle Thread Size 5.8 in.-11, Case Included No, Amps 11, Speed RPM 11,000, Variable Speed No, Side Handle Yes, Battery Included No, Cord Length ft. 8. Advanced Airflow system maximizes airflow and reduces debris ingress, improving motor performance and life 5/8in.-11 spindle thread size Needle bearings Paddle grip with non-locking paddle switch 100 tool-free grinder - no wrench or screwdriver required Easy changing of all accessories Easy installation and adjustment of guard"