Caterpillar (CAT)-style premium aftermarket cutting edge. Part reference 7T9978. Application/reference: Cutting Edge RH/LH 25mm. Replaceable ground-engaging edge for excavation, grading or material handling with the matching blade or bucket. 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.