Whether youre building furniture, machining metal parts, or simply need to hold craft materials steady while you create, this Excel Blades Miniature Iron C Clamp is a small yet sturdy solution for all your temporary clamping needs. The smooth, threaded steel screw features a free-spinning tip that provides consistent, evenly distributed pressure for damage-free clamping. The frame opening measures 1 inch wide. - Excel Blades Miniature Iron C-Clamp.