SWH series chains are 1.5 inch pitch and SWH LBP chains have a top of roller to plate bottom dimension of 0.76 inches. Low Backline Pressure (LBP) chains are designed for handling cases, tray packs, and almost anything else in a box. These unique chains offer rollers to reduce backline pressure of accumulating cases. Its non-marring rollers help to protect the graphics on cases and boxes during accumulation. Available in XLA chain material. Chain is designed to operate on standard 821 series sprockets for true chain/sprocket interaction.