This product is a superior method of connecting electrical lines between prime movers and Trailers. Feature:this product make of PU resin material and flame-retardant,it has a good insulation and good bending performance. Working temperature range:-40--+120°c. Applications:this product is an ideal method of connecting electrical lines between the prime movers,trailers,tractor trucks,semi trailers and all kinds of air-power systems. In high quality,welcome to contact me !