Bosch Power Tools deliver stronger performance and lasting reliability. The 1006VSR Bosch 3/8'' Jacobs Ratcheting Keyless Chuck Variable Speed Drill is rated best in class power-to-weight ratio. Equipped with service minder brushes. 1006VSR Bosch 3/8'' Jacobs Ratcheting Keyless Chuck Variable Speed Drill automatically stops tool when brush replacement is needed. Improved lock-on switch design with recessed in handle to prevent accidental lock-on.