Reinforced rib design provides additional strength to resist effects of stress, wind and vibration. Brack-it assembly can be reused. Industry standard for all round poles greater than 3" diameter. Includes a stainless bolt, nylon washer and 5/16-18 x 3/4" stainless steel hex head bolt. 3/4" wide band slot will allow a single or a double wrap of BAND-IT band. Used to mount traffic signs, security devices, antennae and utility enclosures. Fully threaded to solidly anchor attachment bolts.