Have just been looking at these and other blade options. As far as I can tell my 75 Duster was supposed to have 16". Trico only goes to 15" in the silver ones. ANCO has 16" in their 'Vintage', but they are going for $25 each! I'm not ready to spend $50 on a pair of blades. Will look for a pair of used at Carlisle. For now I picked up a pair of Carquest (Trico)metal frame blades. Advance Auto Parts - Down for Maintenance Don't look the same and they are black, but might paint them silver.