Ramair sock style air filters, which feature two holes cut out of the foam on the underside of the air filter. The two holes are designed, so that you can pull the air filter over the top of the trumpets of the carb or the engine’s two air intakes Features High performance twin layer foam Easy to clean using hot soapy water 100% hand made in the UK – guaranteed against manufacturing defects for life (single user, non-transferable) Long lasting and hard wearing Unit Quantity External Length Filtration Material Internal Structure External Height  Inlet Hole Spacing        3 177mm 15mm Dual Layer Foam No Cage or Stainless Cage Suppport 75mm 90mm