The Titan Fronthoe Thumb is easy to assemble and install on the Fronthoe arm, though the instructions lack detail on the exact mounting location. Once installed, it works well for a non-adjustable thumb—the bucket provides all of the movement. I’ve successfully used it to pick up logs and grab various items, though I haven’t yet tested it lifting a large rock. One limitation is the side clamping plates. Under strong bucket force, the thumb can slide back along the arm, as the plates don’t hold it in place as securely as they could. A more positive locating feature would be a worthwhile improvement. There are also some hardware issues. The side plates are punched for five bolts, but only four bolts are provided. In addition, the supplied bolts and heavy-duty locking nuts are too long, which prevents the thumb from folding back flush into its intended storage position. I resolved this by replacing two M12 x 1.75 x 115 mm bolts with 110 mm bolts and thinner locking nuts (see picture). This allowed the thumb to fold back properly and also let me use all five punched holes to secure the plate more effectively. Overall, despite these shortcomings, the thumb functions well for its intended purpose. I would rate its functionality at 4 out of 5 stars.