These are screw-on holds made with a 3D printer. There are 2 each of 25, 20, 15, and 10mm sizes, for a total of 8 holds. They were made as holds for a training board, but because of their simple shape, they can be combined as shown in the fourth image and used on a slightly overhanging wall. Friction processed. W80mm D40mm H25〜10mm Made of PLA Recommended angle: 80〜110° 3D-printed holds are hard and light, so they are durable. They will soften at 100°C or higher. This should not be a problem during normal use, but please be careful in a car in the summer. Also, over-tightening with an impact driver may weaken the area around the screw holes due to friction heat. Please be careful not to overtighten.