Manufactured from Chrome Molybdenum steel with manganese phosphate finish for added corrosion resistance. Deep WallDrive® sockets suitable for use with impact type air wrenches. Supplied in storage case.8pc 1Sq Drive Deep Impact Socket Set• Manufactured from Chrome Molybdenum steel with manganese phosphate finish for added corrosion resistance.• Deep WallDrive® sockets.• Suitable for use with impact type air wrenches.• Supplied in storage case.• Sizes: 24 27 30 32 33 34 36 41mm.• Lifetime guarantee*.• Model No. AK888MModel No: AK888M:Brand: Premier:Quantity of Sockets: 8:Type: 1Sq Drive - Deep:Contents: 24PTDSEAAK888M