Available Individually with No-Order Minimum.A Master carton of this product includes 1 Pcs. Protects against premature bearing failure. Automatically feeds grease to the wheel bearing. Corrosion-proof, clear polycarbonate housing allows for easy monitoring for grease level. Stainless steel pressure spring and heavy duty pressure plate. Overload outlet prevents component damage when refilling. Fits a variety of popular hub diameters.Item contains little or no individual packagingPart of the Peterson 61 & 62 series.