When purchasing Brownells or any other brand from eGoods365.com store, you can be sure that (a) you are purchasing from US based company with the most responsive and friendly customer service; (b) an authentic, not a counterfeit and not a refurbished product.

We have restructured the passage while maintaining its original meaning:

Custom-made, top-quality bore brushes are widely used in the shop, and we’ve decided to sell them in bulk to make them more convenient and cost-effective. Unlike the conventional method of twisting and chopping off two pieces of shank, our brushes come with a one-piece, looped, and wound shank made of steel. Our nylon bore brushes are made to resist the new generation of bore cleaners, which aggressively attack copper and bronze-based bullet jacket fouling, to prevent accuracy-ruining scratches. Our nylon brushes are just as hard on bronze cleaning brushes as these super cleaners. The .17 and .20 caliber brushes, as well as the Black Powder (BP) series, have brass shanks, while the others have one-piece, looped, and wound steel shanks.