Conveniently mate U.S. brushes, jags and loops to Parker-Hale products.
Big Book Catalog, Issue:65, Page:303
SPECS: OH22 converts .22 cal., male thread, Parker-Hale rods to 8-32 tpi, female. OH30 converts .30 and larger, male thread, Parker-Hale rifle/pistol rods 8-32 tpi, female. OHSG converts female end, Parker-Hale shotgun rods to 5/16" – 27 tpi, female.