The thumb did not come with the necessary adapters to connect to the hydraulic lines and AGT has no service department. Their answer for everything is try to find what you need and we will pay you back

I can’t connect the hydraulic hose to the excavator

I think the value is amazing, the quality appears to be top notch. However, without directions it’s going to take some time to assemble.
For this reason alone it rates a 2 star review.

I own a agt qh12 so I ordered the agt Hydraulic thumb from agt . Opened box check for instructions and parts. Bolts don't fit in holes had to reamed out holes. Bolts are to long had to shin . Finger and ram are mounted. Try figure where to mount the a/ b block goes. Block are the same hoses work right on one side not the other. Short fitting to mount hoses to block and wrong adapter to hook up to lines on machine. Had new hoses made.
No support from customer service never can reach anyone.

Love it. It works great.