Product Specifications 17A –  .17 & .20Cal Rod Brush Adapter Converts .17 and .20Cal rods to accept standard 8/32 brushes 5/40 Male to 8/32 Female Threads For Use with J. Dewey .17 and .20Cal Nylon Coated and Stainless Steel Rods with 5/40 Female Threads to Accept Standard Brushes with 8/32 ...

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