Let me start by saying that I have bought a number of attachments from Titan and been nothing but thrilled with the performance and value. Five stars, and then some. That said, this thumb attachment is not a very good product. The cylinder travel is too short, so I bought a longer cylinder. The hoses use a metric flat face o ring attachment on the cylinder, so new hoses. The swing mechanism has a pin where the cylinder needs to travel so a rework in the thumb attachment point to the cylinder is required, as well as relocating the thumb pivot point to the bucket pivot point. So basically the only part I have used from this kit is the serrated thumb piece. I even had to cut the two serrated pieces apart to be able to use the bucket mount. Was it still worth it, cost wise, to get the serrated arms? Maybe. This unit is pretty budget friendly and if all you care about is fine adjustment of the thumb without having full retraction, this kit might be for you, but it really did not work for me. I was looking for something more "plug and play".