AFAM Chains (PLEASE SELECT LENGTH & PITCH FROM DROP DOWN MENU)AFAM Chains (PLEASE SELECT LENGTH & PITCH FROM DROP DOWN MENU) Kit Selection For chains and chain & sprocket kits we list several grades. Why? Whats the difference? In a word QUALITY. We only list chains that are appropriate for that particular model. However, the higher the grade and ultimately the price, the better the chain. This means it is stronger, will last longer, is appropriate for harder use and in the long term will save you money. We list