Model Name: Manfrotto ・Super Clamp 035 x 2 The screws tighten securely. Please check the photos for the condition of the scratches. The one with rust on the front has a little resistance when tightening (I think it can be resolved with lubricant). The parts to fix it to a desk are not included. If you are in a hurry, please let me know and I will ship it as soon as possible. If you are looking for one, please consider it.