1. Transmission Chains
Power tranny transmission chain chains are categorized into six major organizations.
1.1 Regular Roller Chains. These chains are created for general usage.
1.2 POWERFUL Chains. These chains have higher tensile power and greater fatigue power.
1.3 Lube-Totally free Chains. These chains have longer wear life than standard chains without lubrication.
1.4 Environmentally Resistant Chains. Chains with unique corrosion resistance.
1.5 Specialized Chains, Type 1. For 
specific applications.
1.6 Specialty Chains, Type 2. For general designs.
Within these six groups, there are numerous types of chains available