Features: 1.Fitment: 420 motorcycle chain fits for 50cc 70cc 90cc 110cc 125cc ATVs and dirt bikes, go kart, mini bike, scooter, pit bike, quad. 2.High Quality Material: Motorcycle chain is made of high carbon steel, acid, alkali, cold and heat resistance, have a long service time. 3.Excellent Performance: Rustproof, strong oxidation resistance. Lubricating oil with strong abrasion resistance, durable tensile strength and high adhesion. 4.Easy Operation: The chain breaker has a ergonomics design and will make your work much easy, convenient for using, save your efforts. 5.Original Standard: Professional manufacturing according to original standard, stable performance and high reliability. Specification: Item Type: 420 Motorcycle Chain+Chain Breaker Material: High carbon steel Chain Size: Pitch: 1/2in Roller Width: 1/4in Roller Diameter: 5/16in Sprocket Thickness: 0.227in Standard: 1pcs roller chain and 1pcs chain breaker(chain breaker is suitable for 420-530) Fitment: Links can be removed to fit virtually any application by chain breaker, like 50cc 70cc 90cc 110cc 125cc ATVs and dirt bikes, Go Kart, Mini Bike, Scooter, Pit Bike, Quad.