4-1/2" Grinder (5/8" Spindle) The Bosch 1375A is a multipurpose tool designed to grind, sand, brush, sharpen, and deburr. This grinder offers a 5/8" 11-spindle thread for attaching the most popular accessories. The slim housing grip is designed for easy handling, and the two-position side handle is angled for comfort. The dust-resistant switch and the protected motor deliver longer service life. Save time with the spindle lock for quick wheel changes. Includes guard, side handle, flange kit, wrench, and wheel. Features: 11000 RPM 6 AMPs Bosch has been in the headlines of state of the art development for over 100 years. From the invention of the jigsaw to their ergonomic designed tools, Bosch as cared about the customer since they started business in 1886.