Set with 11 Impaktor Deep sockets for use with electric or pneumatic wrenches with 12.5 mm = 1/2 drive. Long design for low-lying couplings and protruding thread rods. The Impaktor technology ensures a higher-than-average service life even at extreme requirements. The hexagon profile used allows a high power transmission while simultaneously being precise and protecting the profile. With Take it easy tool finder with colour coding by size - for quick and easy identification of the required tool .