Malossi Blue (2000RPM)Clutch Shoe Springs Malossi Delta Fly Clutches Softest to Firm Red, Blue, Black 3 sets, of three, three colors, three tensions. these are the rad clutch springs for using on your derbi flat reed clutch. jimmy's got em, i have em. if you can get these on your clutch, which is no easy task, then get ready for some extra rev and the derbi lurch! also these are for the malossi MHR delta and fly scooter performance clutches supposedly the reds are also