Check the listing for details. 5 Pcs 04B-1 Roller Chain Connecting Links 6mm Pitch Chain Master Links. Condition: New. Listed at 15.91 USD. Product Package: 5 pcs of connector links for 04B-1 industrial roller chain. Total Length: 11mm; Roller Diameter: 0.157"/15.88mm; Pin Diameter: 0.073"/1.85mm; Inner Plate Depth: 0.197"/5mm; Pitch: 0.236"/6mm.Material: The chain links are made of carbon steel, precision machined, strong, and durable.Surface Shot-Peened: The standard chain end connector split links are shot-peened during the production process to improve the strength and toughness of the product and extend the service life of the chain.Easy to use: The links are easy to attach to the drive chain, making it easy to lengthen or shorten the chain; old sprockets can be removed with circlip pliers and removed from the chain. To install a new chain joint, first, insert the pin and snap the spring clip or cotter pin into place.