1. Transmission Chains
Power tranny chains are categorized into six major organizations.

1.1 Standard Roller Chains. These chains are made for general usage.
1.2 POWERFUL Chains. These chains have higher tensile power and greater fatigue strength.
1.3 Lube-Free Chains. These chains have longer put on life than standard chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with particular corrosion resistance.
1.5 Specialized Chains, Type 1. For transmission chain specific applications.
1.6 Specialized Chains, Type 2. For general designs.
Within these six groups, there are numerous types of chains available