This ratcheting combination spanner set features a unique holding function, thanks to the metal plate in the jaw, reduces the risk of dropping nuts & bolts; replaceable metal plate in the jaw secures nuts & bolts with its extra hard teeth & reduces the danger of slipping. The integrated limit stop helps to prevent any slipping around the bolt head & allows higher torque to be applied; double-hex geometry makes for a positive connection with nuts or bolts & reduces the risk of slipping; return angle of only 30° at the open end to avoid time consuming flipping of the wrench during fastening jobs.