Coupler: Quick coupler 360 degree swivel. Head hight : 14.5 mm(standard). The sale of this item may be subject to regulation by the U.Food and Drug Administration and state and local regulatory agencies. You feedback is VERY important to us! Our USA Warehouse located in Gresham, Oregon, United States. We strive to exceed all your expectations and put a smile on your face. We stand behind our products and pride ourselves on OUTSTANDING customer service. Please Refer to Beijing Time. Regulation Number: 21 CFR 872.6070.