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