I own two sets of these Iron Cobra double pedals and use my strap drive FlexiGlide Iron cobra pedals that I also have all the time , so these just sit on the shelf in my drum room . These are the dual chain drive "Powerglide " version Iron Cobra double pedals and they have a workhorse of a reputation . I never use anything but white lithium grease on any of the parts that are normal maintainence on any of my drum pedals and these were just lubricated up , so these will last for many years to come . These even today are still an industry standard when it comes to bass drum pedals and quite a bit of pro's are still dropping their feet down on a set on tour or in the studio . Absolutely no pedal squeaks at all with these . Selling price is firm / Not interested in any trades Cash only deal