McMaster-Carr
McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.www.mcmaster.com
Link above takes you right to the rods...can't beat it for between $6 to $12 a rod.
Here's the part numbers for what I ordered...labeled by caliber. They all worked perfect, and saved my a$$ on a few misaligned adapters. Used a grinder to round off the edges and smoothed them with fine sandpaper...also put labels on one end for easy identification...
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Same place i ordered from last year, work great.