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 service parts in CNC machine tools, electronic equipment, counting devices, machinery and electrical machines, etc.Product Name : Cable Drag ChainMaterial : PlasticInternal Size : 18 x 37mm/0.7" x 1.5" (H*W)External Size : 23 x 47mm/0.9" x 1.9" (H*W)Total Length(Approx.) : 1M/39.4"Color : BlackWeight : 380gPackage Content : 1 x Cable Drag ChainNote:Light and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.