At WesSpur, we're lucky to have one of the best manufacturers of gear for work at height right in our back yard. SMC was started in 1967 as Seattle Manufacturing Company, and now continues their history of making top-quality carabiners, pulleys, and other hardware in Ferndale, WA. SMC is an ISO 9001 certified manufacturer, and every piece of gear they make is built to last a lifetime of use. SMC products are built to the highest standards, and made in the U.S.A.