Emt Conduit 1 Hole Click-on Strap | 7 in Length X 1.26 in Width X 4.51 in Height, 17/32 in Dia Hole, for Rigid Conduit and Imc | 2.86 in Length X 0.87 in Width X 1.5 in Height, 3/8 in Dia Hole, for Emt | Use Through Knockout to Connect Box to Conduit Coupling; Use With a Locknut to Connect Two Boxes Side by Side or Back to Back; Use With a Locknut to Connect Fixture Housings in Continuous Runs; Rigid Conduit Threads (Nps)Furbay Electric Supp