Features and Benefits:•Internal governor maximizes speed under load, thus increasing your productivity•Safety Throttle Lever to prevent accidental start ups•Safety Disc cover for protection•Aluminum alloy housing is rugged yet lightweight•Powerful high performance motor for fast, efficient grinding in tight quarters•Free speed 12,000rpm•Hardened and ground spiral bevel gears for low vibration•Dead Handle Mounts on either side for right or left hand operationSP-1257 is perfect choices for high performance material removal. The 5" ( 125MM) respectively, air angle grinders combine a unique internal governor with a powerful 1.00 hp motor, to give you the best-in-class power to weight ratio grinders that will maximize your rate of material removal.