This is a extendable mirror arm that is 9'' and extends out to 13'' and option 14'' to 23'' ($10.00 more. ) It bolts on the upper hinge and would require a longer pin which is B-508. They will come unpainted. This mirror bracket will work on left or right side of truck. These fit 1939-1947 Dodge trucks and also for the 1946-1968 Flat fender Power Wagons. Also Option 48-55 C1 trucks Note: Part # B-568 bolt would be needed. # B-508 or B-508-48 For pin