Caterpillar (CAT)-style premium aftermarket penetration-plus bucket tooth for the J300 series. Part reference 183-5300. Penetration-focused profile for excavation in difficult-to-dig material. Related retention: pin 107-3308; retainer 8E6259. Adapter option: 4T4307 (bolt-on); select the correct lip thickness and mounting. PETRAX premium aftermarket range for major brands including CAT, Komatsu, Volvo, Hitachi, John Deere, JCB, Case, New Holland, Hyundai, Doosan/Develon, Bobcat, Kubota, Takeuchi and Sany. This item fits only the specified system and matching mounting dimensions.