The Links™ 500 chain is the ideal choice for multi-speed derailleur equipped bicycles with five to eight rear sprockets. The 112 link length fits most bikes as is, and the included master link makes installation a snap. Requires the use of a chain tool, such as the Quicklink™ 400 Chain Repair Kit to remove the old chain and change the length of the replacement chain. Fits 10 to 24 speed bicycles. 1/2 x 3/32 inch with 112 links. Master link included and easy to install.