" Available In: CJA-022 (.22 Cal) (Thread: 8-32) CJA-027 (.27 Cal) (Thread: 8-32) CJA-338 (.338 Cal) (Thread: 8-32) Features Firmly hold cotton swabs with the correct calibre jag to effectively clean the barrel Made to the highest quality brass construction The fastest way to thoroughly clean, dry or oil your barrel Designed to provide a tight fit between the patch and the bore Thread: Male 8-32 For the perfect fit, use Spika cotton cleaning patches "