Fastenal 48887, 2-1/2", Electrogalvanized, Rigid Conduit Strut Pipe Clamp, 1pc. Fastenal 48884, 1-1/4", Electroplated Zinc, Rigid Conduit Strut Pipe Clamp, 1pc. We have new products in manufacturer boxes, as well as loose and shelf-worn quality products to save you even more money.