Lyman 4320051 Auto Advance Target Change targets up to 200 yards away AR400 steel construction is rated for all rim fire calibers Battery Operated and easily disassembled for transportation Come with 50ft target roll Target height is customizable, utilizing inexpensive electrical conduit tubing available at any home center Change targets up to 200 yards away Battery Operated and easily disassembled for transportation Come with 50ft target roll Target height is customizable, utilizing inexpensive electrical conduit tubing available at any home center