Black Harley Big Twin Breather Bolt Filter Kit CNC Machined from Solid Billet Aluminum - Made In the USA Stage 3 military grade black anodized. Stainless steel snap rings and wire mesh. 3/8 X 3/4" Threads Fits 94 and up Harley Big Twins: Dynas, Softails, Touring and CVO. Will not fit EVO!