Adjustable flange surface mounts the unit. Push-Button Operation, Less Than 5 Lb of Force, No Grasping, Pinching or Twisting of the Wrist. Easy access Product tray. Single-coin slots are key to jam-resistant operation. Accepts one quarter (U.S. or Canadian). Push-button coin return cancels Product selection. Returned coin or wrong coin (1¢, 5¢,10¢) by-pass mechanism and drop into Product tray.