Spring clip type is standard for small pitch chains through size #60.
Cotter type is standard for #80 chain through #180 chain.
Single pin cotter type is standard for #200 and #240 chains.
When a strand of chain consists of an odd number of pitches, an offset link is needed to assemble the chain. Assembly is simple, and chains can be custom
fit to your power transmission needs. (Also known as a half link).
PIN LINK: (ISO Outer link):
Permanent outside link that cannot be removed. Consists of a U-link and a press fit plate.
ROLLER LINK: (ISO Inner link)
2-PITCH OFFSET LINK:
Consists of an offsett link and a roller link permanently riveted together. Standard for 1/4 inch pitch and smaller chains.