Trade Size : 3/8 In Material : Zinc Suitable For : 14 To 2 Thru, 12 To 3 Wire With Ground NM Sheathed Cable, 14 To 2 Wire Steel Armored Cable, 14 To 2 Wire With Ground Aluminum Armored Cable, 3/8 In FMC, Aluminum Smooth Sheath Metal Clad Cable 0.41 To 0.5 In Dia Aluminum Interlocked Metal Clad Cable 0.46 To 0538 In Dia, Steel Interlocked Metal Clad Cable 0.438 To 0.56 In Dia