Copapa Plastic Open Type Towline Cable Carrier Drag Chain 7 x 7mm Product Name : Cable Drag Chain;Color : Black Material : Plastic Internal Size: 7 x 7mm / 0.023' x 0.023'(H*W); External Size: 10 x 13mm / 0.033' x 0.043'(H*W) Package Included : 1 x Cable Drag Chain