SODIAL 40.55" Black Cable Wire Carrier Drag Chain Nested 18x50mm Product Name : Cable Drag Chain Material : Plastic Semi enclosed type, move flexibly, low noise, easy installation. Suitable for using in reciprocating motion of the occasion, is able to built in cable, tubing, water pipes, etc. Used widely as a component and sevice parts in CNC machine tools, electronic equipment, counting devices, machinery and electrical machines ,etc.