Save Time, Money and Frustration. No More Tangled Chains. Easy Transport & Easy Organization. The Original Chain Locker® is a universal chainsaw chain storage case for all chains fitting bar sizes ranging from 6" - 20". Original Chain Locker has a single row design and will fit a minimum of 8. Built for Durability. Each Chain Locker® is built with polypropylene and all hinges and latches are manufactured with 1/8" diameter stainless steel rods. Hinges are also frame reinforced. MADE IN THE USA. Patented.