Patz IntelliChain Alley Scraper System constantly adjusts to weather, bedding & manure changes while recalculating the amount of torque needed. Energy efficient planetary gearbox driven by single 3/4=HP motor. Top-of-the-line safety features to help protect you and your livestock. Narrow, space-saving drive unit design provides ultimate layout flexibility. Sliders sleds available for layouts with alleys of unequal lengths up to 1,000 ft total circuit. On-floor or recessed chain installation available. Low maintenance!