These Nylon Bore Brushes clean while protecting the bore from abrasion. All brushes have 8 x 32 male threads except the 17 caliber which have 5 x 40 male threads.
All .375 Calibers
Nylon Bristles (.410 Diameter) Unaffected by Ammonia based solvents.
Galvanized Plated Wire Core with Looped End and Crimped Coupler.
Standard 8 / 32"
Will Not Fit Outers Cleaning Rods
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