Weber’s line of ZEL Step Feeders and related system are the fastest and quietest systems available on the market today. With Weber’s line of ZEL Step Feeders, the actual pan itself remains motionless, with the only components requiring movement and/or vibration being the steps that efficiently place the screws onto the in-line track, the vibrator track that transports the screws to the escapement, and the escapement itself. The ZEL line of Step Feeders is available in three sizes: 120, 240, and 360 pan sizes.