Mikuni Mounting Flange, 34mm carb (58-75mm stud centres) with gaskets & boots for 40mm Carb Spigot Anodized alloy mounting flange, rubber sleeve with clamps and mounting gasket Ideal for secure mounting of Mikuni carbs to engines with uncommon stud spacings Slotted mounting holes suit stud spacings of 58mm thru 75mm Suits both 6 & 8mm (1/4",5/16") Allen screws, NOT SUPPLIED Suits carbs with 40mm spigot diameter and up to 34mm internal bore