Caterpillar (CAT)-style premium aftermarket hot-cupped end bit. Part reference 8E4537. Application/reference: D8 RH, T (EWL) Hot Cupped End Bit RH. Formed end bit that protects the blade corner in dozing and high-wear applications. Right-hand configuration. Mounting: 1-in plow bolt; confirm bolt length and the exact hole pattern before installation. Brand reference: Caterpillar. PETRAX premium aftermarket replacement; OEM names and part numbers are used for identification only. This item fits only the specified system and matching mounting dimensions.