This bed frame rail clamp is constructed of heavy ga. steel and comes in a zinc plated finish. This bed frame clamp features a 1 in. wide body and fits on 1-1/4 in. wide x 1-1/4 in. tall frame material. Each of the 2 clamps within this package include a locking bolt for easy locking and adjustment. These clamps are used to hold bed frame meeting rails together, and they can be held secure by snugging with a wrench or pair of pliers with slightly more torque than hand tight. These bed frame clamps are easy to install and they are used by many to replace missing or worn clamps. Tip: Compare your bed frame dimensions to those illustrated prior to purchasing.