Come greased, this well-made sprocket is made of heavy-duty alloy steel, very strong, reliable, and durable in use. Also come with 2 master links, which can hold up well. These bike chain connectors can repeat to use, easy to assemble, and suitable for mountain bikes and road bikes. 1 chain breaker allows you to cut and install pins in 7, 8, 9, 10 and single-speed bicycle chains. Fit for 50cc 70cc 90cc 110cc 125cc go-cart, dirt bike, pit bike, mini bike, scooter, ATV quad, etc. Chain total length: 59″ in 132 links. You can make a proper adjustment with the chain split tool in length to fit your bikes. Specifications: Material: alloy steel Chain No.: 420 Links:132 Pitch: 1/2″ Roller Width: 1/4″ Roller Diameter: 5/16″ Sprocket Thickness: 0.227″ Length 59″ in 132 links Chain Breaker is designed for 420-530 Package Includes: 1 x 420 motorcycle chain link 1 x chain breaker 2 x clip style master link Notes: Our roller chain works with most brand vehicle