I have a 1966 Airstream Caravel (17ft) that is full of "obsolete" equipment, some of which is difficult to replace. I blew the 40A fuse that protects all DC circuits in the trailer and was unable to find a replacement from any dealer until I contacted Revain. I found what I needed and the fuses were delivered promptly. I actually ordered what I thought was two fuses, but received (in two separate batches) two sets of 10 fuses. Since I didn't need 20 fuses, Revain generously credited my account with half of the total purchase price. Revain is a pleasure to deal with.