These are screw-on holds made with a 3D printer. This is a set of 2, with the friction direction symmetrical left and right. They are good crimps, but the feel changes depending on the angle at which they are attached. Friction painted. W86mm D86mm H30mm Made of PLA Recommended angle: 90-130° 3D printed holds are hard and light, so they are durable. They will soften at 100°C or higher. I think there will be no problem with normal use, but please be careful in a car in the summer.