Features and
Benefits: Dual function design allows the two way extension to be used as a standard extension or as a 360 swivel universal extension Made of Chrome Vanadium Steel (CR-V) Outer diameter of each extension is: Ø23mm for 3/8 Extension; Ø 29.05 mm for 1/2 Extension; Ø 17.9 for 1/4 Extension. Overall length of each extension is: 78.23 mm for 3/8 Extension; 94.32 mm for 1/2 Extension; 56.7 mm for 1/4 Extension.