US PRO Tools Impact Socket Adaptor Step Up Adapter 1/2" F to 3/8" M 3499
US PRO Impact Adaptor 1/2" F x 3/8" M 3499. An impact adaptor made from strong Chromium Molybdenum steel and hardened to HRC 43-45. Adaptor 1/2" Female x 3/8" Male. Hardened to HRC 43-45.