This Spectre breather filter, also known as a crankcase vent filter, has a flange with an inside diameter of 10mm. By using the included adjustable worm gear clamp, this air filter will fit tubes with outside diameters from 3/8 inch to 1/2 inch (8-12mm). This Spectre breather uses stainless steel mesh as its filter mdeia, it features a triple chrome-plated steel top and base, and it comes factory pre-oiled and ready to use.

Product Features:

• Triple chrome-plated steel top and base
• Made with stainless steel mesh
• 10 mm flange inside diameter
• Includes a stainless steel adjustable clamp
• Fits 3/8 inch to 1/2 inch (8-12mm) tubes