Excavator bucket quick coupler , also named as quick hitch coupler, quick hitch, bucket pin grabber can quickly connect various attachments (bucket, hydraulic breaker, plate compactor, log grapple, ripper, etc…) on excavators, which can expand the scope of use of excavators and can save time and improve working efficiency. Advantages 1.Driven by hydraulic oil, operate efficiently. 2.Double Safety System: Rear safety hook and the hydraulic lock can hold the attachment tightly to prevent it from falling off even if the front hitch or cylinder is broken suddenly. Safety issues Compared with traditional quick coupler, we add another auto lock on its front hitch ensuing double safety. 1.Independent hydraulic system, the front lock still works well even when inner leakage happens. 2.The front lock will lock the pin from dropping off when the rear tiger mouth or cylinder rod broken.