Quick Coupler Simple & Fast change ! * Features & advantages 1. Full Automatic Safety System - Safety pin connection by switch installed in operator’s cabin. - Coupling completion is checked by buzzer sound signal. - In case of electrical failure happened, manual operation is possible. 2. One-pieced body plate - Body frame plate is built up by machining process not by welding : excellent durability and reliability - Free from welding cracks on stress concentration points. - See more at: http://www.bestmadeinkorea.com/product-3056/Building-Material-Construction/Quick-Coupler-Hitch-type-SDQ08H-SDQ10H-SDQ17H-.html#sthash.Ei88gYPy.dpuf