Force 831 Gear Wrench Adapter Ratchet Spanner Adaptor for Socket & Bits Driver

To use with ratchet spanner wrenches together to driver socket or screw power bits. Can substitute socket ratchet handle if used with ratchet wrenches. 3/8" x 1/4"inhex. 3/4" x 1/2"DR. 1/2" x 3/8"DR.