For use with our Multi-Purpose 12.5'x13' Backdrop Stand kit, this addition includes: 1- 13' Air Cushioned Heavyweight Light Stand, 1-Background Stand Spigot, 1- 56" - 151" 3-Section Cross Bar, each extension set adds up to 12.5' of width to your existing kit; no limit to the number of additions you can add. This price valid with purchase or prior purchase of complete stand kit.