The box of 100 Beam Clamps from Platinum Tools are designed to hang ceiling wire and jack chain, threaded rod, and eye lag screws. They are a secure and cost-effective hanging hardware solution. The beam clamp supports 1/4" and 3/8" threaded rod, S-hooks, and bridle rings. The Beam Clamps can accommodate standard 1/4"-20 or #10-24 threaded bridle rings.