Thomas & Betts 1278AL Metal Strap. T&B® Pipe Strap 1 in 1/4 in Stud For Use With: IMC/Rigid Conduit Through Hole Mount Aluminum 3 in L x 3/4 in W x 1-17/32 in H. Additional Description: TB -1278AL (T) 1IN PIPESTRAP IMC ALUM. Catalog Description: 1 Inch Pipe Strap Aluminum for Use with Rigid/IMC Conduit.