Milwaukee Shockwave Impact Duty Socket Adaptor Set made from proprietary steel and heat treat process for maximum strength and durability. Heavy duty construction for fastening capabilities in all impacts. Specifications • Tool Reception: 1/4" Hex • Shank Reception: 1/4", 3/8" and 1/2" Square • Length: 50mm, 50mm, 55mm Features and Benefits • Proprietary steel and heat treat process for maximum strength and durability • Heavy duty construction for fastening capabilities in all impacts Contents • 50mm Shockwave Adaptor 1/4" Hex Drive - 1/4" Square Drive • 50mm Shockwave Adaptor 1/4" Hex Drive - 3/8" Square Drive • 55mm Shockwave Adaptor 1/4" Hex Drive - 1/2" Square Drive