Holds Patch Tightly For Uniform Cleaning
Sharp center post and spring fingers firmly hold patch while pressing uniformly against bore walls for very thorough cleaning action. Removes practically all loose residue with first pass through bore. Patch always stays firmly on holder.
Big Book Catalog, Issue:73, Page:347
SPECS: Nylon 5/16"-27 thread. 2-1/2" (6.3cm) long. 2 holders per package.