This Dewey Specialty Thread Adapter gives a cleaning rod and brush even more versatility by allowing the shooter to interchange accessories and even use accessories that would not normally fit Dewey rods. NOTE: Size indicates the two ends of the adapter--e.g., "8-32 Female to 12-28 Male" means that one end of the adapter is 8-32 Female (and will accept 8-32 Male) and the other end is 12-28 Male (and will go into 12-28 Female).