#35 roller chain with SK1 attachments every 4th pitch (1.500" spacing). #35 SK1 attachment roller chain has a straight tab on both side of the chain with a hole.
Maintenance and lubrication is crucial in the overall performance and life span of roller chain. Proper lubrication will reduce abrasion, chain wear, friction, noise and keep chains running cooler at higher RPM's. You can download the Nitro Roller Chain Care below.
Different chain companies may use different identifications for attachments. Below is a quick reference chart for attachment link interchangeability to the Nitro™ attachments.