Heavy duty unit. Well made. Wish they had made the unit longer to accommodate a longer hydraulic cylinder. The 12" cylinder that comes with the unit is not able to move the thumb back far enough out of the way for digging and other operations. It sticks down at almost a 90 degree angle from the arm when fully open. Other than that this is a very good product. Caution, the wire lock pins that hold the (3) main support pins, comes off easily when using thumb in brush. I lost (2) and ended up tweaking one end of the thumb because a main pin partially came out while picking up a pile of brush. I ended up replacing the wire lock pins with large cotter pins.