$65.99 Umpco S325DKG16 1 inch Aluminum Cable Clamp, 1/2 inch Wide | Waytek
KMC Cable Clamp, Cable Clamp, 304 Stainless Steel, 2 1/2 in Cable Clamping Dia., PK 250 - 481W61 
Halex 1-1/2 in. Non-Metallic (NM) Twin Screw Sheathed Cable Clamp Connectors-05115 - The Home Depot
