1.Chain Specifications:Pitch: 1/2″; Roller Width: 1/4″; Roller Diameter: 5/16″; Sprocket Thickness: 0.227″. 2.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. 3.High Carbon Steel transmission chain, acid, alkali, cold and heat resistance, long life. 4.No rust, strong oxidation resistance. Lubricating oil with strong abrasion resistance, durable tensile strength and high adhesion improves abrasion resistance. 5.Packing included: 1 * Roller chain + 1 * Chain breaker+1 *Thimble(Breaker is good for 420-530.) Brand new and high quality The sealed chain combines great wear resistance with overall combined performance to create a chain of excellent value. Strength and durability Links can be removed to fit virtually any application. All cha