Originally Posted by
trebor
King headz aluminum. They work awesome and have lasted and have plenty left on them.
without a doubt, get the KN 7075 shoes...my last set had 3 gallons on them when I swapped them out - I did deburr then at about 1.5 gallons...I likely could get another 1/2 - 3/4 gallon out of them if need be...