PSH Stainless Steel Chamber Brush . 38/. 357 Revolver Stainless Steel Revolver Chamber Brushes Excellent for the removal of heavy leading. Very aggressive, for extreme cases of leading and fouling. Not for excessive use. Brushes have 8-32 thread. Cotton flannel patches , Gun patches , Cleaning patches , Nylon bore brush , Bronze bore brush , Chamber brush , Pro-Shot , Bore brush , Pro-Shot , Gun cleaning , Rifle cleaning , Handgun cleaning , Shotgun cleaning