780 B 3/8" Adaptor, 780 B/2 x 5/16" x 30 mm Air Tools Opening size 2-7/8" 8 point

780 B 3 8" Adaptor, 780 B 2 x 5 16" x 30 mm Air Tools Opening size 2 7 8" 8 point Opening size 2 7 8" 8 point Wheel bearing locknuts are easy to remove or install with these specially designed sockets High grade truck wheel bearing locknut socket is made of high strength steel Measure from flat to flat to determine size of locknut Designed for use with 3 4" square drive manual tools onlyWheel bearing locknuts are easy to remove or install with these specially designed sockets Keys made with alloy steel for maximum strength and to resist rotational distortion Chamfered edges on both ends help guide the key into the fastener smoothly and quickly Comfort dual material grip allows for added torque and non slip use Keys can be used as short or long arm