Growsun Adjust Drive Motor Light Mover Kit for Hydroponic Lighting System Main include:Motor, Two piece 7ft Rail,2 Kits of Pulley and Nuts for Installation Free accessories: 1 Pair 1/8 Metal Rope Hanger,2 Main Wheels,8 Deputy Wheels and 10 Pcs Screws Upgraded Motor will NOT Make the Temperature High Than 122 F 7ft Length Rail,Made by Aluminium Alloy,Durable and Maximum Weight Support:10Kg(22pounds) Grow Lights With the Rail Mover Can Providing a Well-Proportioned Illumination to The Plants