Kohken 1/2″ 12.7mm SQ. Impact Adapter, 3/8″ 9.5mm SQ. (Part Number: 14433A-B) Kohken 1/2″ 12.7mm SQ. Impact Adapter, 3/8″ 9.5mm SQ. (Part Number: 14433A-B). 1 ~ 4 weeks.