uxcell 5M Length 20mm Outside Dia Corrugated Bellow Conduit Tube for Electric Wiring Product Name : Corrugated Tube;Color : Black Tube Outside Dia : 20mm/ 0.787";Tube Inside Dia : 16mm/ 0.629" Length ( approx.) : 5M/ 196.9";Material : Plastic Weight : 206g Package : 1 x Corrugated Tube