Just tear off towel and sensor activates to present another! Portion control provides 10" length every time. Dispenses any paper quality. Holds rolls up to 8" wide x 8-1/2" diameter and one 4" stub roll. Lock prevents pilferage (waffle key included). Operates on four D alkaline batteries (not included); battery usage equivalent to dispensing 100, 800-ft. rolls. Break-resistant plastic. 12-1/2w x 9-5/8d x 15-1/2h.