1. Transmission Chains
Power tranny transmission chain Chains are categorized 
into six major groups.
1.1 Regular Roller Chains. These chains are made for general usage.
1.2 POWERFUL Chains. These chains have higher tensile strength 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 unique corrosion resistance.
1.5 Specialized Chains, Type 1. For particular applications.
1.6 Specialized Chains, Type 2. For general designs.
Within these six groups, there are numerous types of chains available