Slogging (striking) 12-point box-end wrench 21 mm, 3/4″ drive MAN (4937-21, HAZET)
A HAZET slogging (striking) 12-point box-end wrench 21 mm with a 3/4″ (20 mm) square drive and two striking faces – for loosening seized or heavily tightened nuts by hammer blows.