3 PACK - 17mm 19mm 21mm DEEP Impact Socket Set - 1/2" Square Drive - 6 PointOverview: Manufactured from Chrome Vanadium steel, hardened, tempered and with a phosphate finish for added corrosion resistance. Deep 6-point WallDrive sockets allows a transfer of up to 30% more torque to the fixing. Supplied in storage case.Features: Manufactured from Chrome Vanadium steel, hardened, tempered and with a phosphate finish for added corrosion resistance. Deep 6-point WallDrive sockets allows a transfer of up to 30% more torque to the fixing. Sizes: 17, 19, 21mm. Supplied in storage case. Lifetime guarantee*. Specification: Drive - 1/2"Sq Net Weight - 0.76kg Sizes - 17, 19, 21mm Further Information: We sell a wide variety of tools & workshop equipment for both the DIY and Professional markets. With well over 10,000 lines of equipment suiting all jobs big or small, our online store has it all. If you can’t quite find what you are looking for, please feel free to contact us and we’ll be more than happy to help.Alias: ys09853