Kane ksf 4″ snap feeder with j-hook red kane snap feeders are designed for supplemental feeding in the farrowing crate area. this 4 inch/10 cm, 9 inch/23cm model has a positive j-hook locking device allows for quick and easy installation to all types of flooring while the economical feed-saver lip and grill significantly reduces feed waste. its water tight trough provides access for piglets and may be used to provide milk replacement for smaller piglets needing a nutritional boost.