Our M18 brushless 4-1/2 or 5 in cut-off grinder delivers power and runtime while maintaining its compact size. The 11000 rpm brushless motor was built and optimized specifically for cutting and surfacing applications. Paired with built-in RedLink power tool technology and REDLITHIUM batteries, the brushless grinder provides efficient power delivery and longer battery life resulting in up to 80 cuts in 1/2 in rebar. The brushless grinder's body is 12-1//4 in long and only 4.6 lb with the XC5.0 battery attached. Our brushless grinder includes an electronic clutch for kickback protection, as well as overload protection to maximize motor life. With a 5/8-11 spindle and tool-free guard adjustments, you will experience faster adjustments and less downtime, while remaining fully compatible with the most common grinder accessories in the market. The compact and light build allows for excellent control and comfort. The brushless grinder is built to last with an all metal gear case, getting the job done every time.