FEATURES - This Motorized electric Background Drive Set can drive 4 paper/muslin/cloth background rolls. - This equipment fit the pipe which diameter 5-6.5cm - Allows you to easily and quickly select and change any of 4 backgrounds - Remote controlled electric assembly makes raising and lowering your backgrounds quick and easy - Supply Voltage: 100-240V/50-60hz PACKAGE CONTENT - 2 x 4 fold mounting brackets - 4 x Electrical motors - 1 x Remote control - 1 x Signal receiver - 12 x Expansion Anchor Screws Remark 1.Light stand, Backdrop or Metal/PVC Crossbar are NOT included 2.The remote control is powered by three AAA 1.5V batteries (Batteries are not included because of aviation safety policy)