Dan I got the part number from Defender. Jim Kerney had purchased them, and I had to call up Defender and have them go through HIS orders to find the number. I doubt I could do that trick with the new and UN-improved Defender but who knows. I bought a complete set of them to have some spares on hand. The price seems to have about doubled since then if memory serves.
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Jim Gregory
Sabre 402 #32
Milford CT