The bosch gsb18vec5 118v 2 speed brushless combi drill 50ah kit is a new professional upgrades include kick back control this innovative feature helps to protect the users wrists and arms from injury other features include a keyless 13mm full metal chuck for increased durability and electronic motor protection to protect against overload which increases the drills lifetime key features long lifetime and high quality thanks to all metal chuck and brushless ec motor innovative functions such as pr