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 robust storage case. SEALEY PREMIER - One of a comprehensive range of Premier Hand Tools, suitable for daily professional use. CHROME MOLYBDENUM Manufactured from high quality steel with a manganese phosphate finish for added corrosion resistance. SUITABLE FOR USE WITH IMPACT TYPE AIR WRENCH 10pc set Includes sizes 24, 27, 30, 32, 33, 36, 38, 41mm, 1"", 1-1/8"". DEEP WALLDRIVE® SOCKETS Allows up to 30% more torque to be applied to the fixing. SUPPLIED IN ROBUST STORAGE CASE For easy storage solutions. LIFETIME GUARANTEE*.