The ultimate spoke thread compound is SpokePrep(TM) because it is both a lubricant and a thread lock! How can it do both? When spoke tension is low and there is a risk of loosening, SpokePrep "locks" the nipple by maintaining a minimum nipple torque. When spoke tension is high SpokePrep keeps nipple torque low with Teflon lubrication. We also have SpokePrep in two colors so you can prep your spokes and immediately know on which side of the wheel they will be used. Features: Double prep kit includes two colors of spoke prep to distinguish different gauges or lengths Each container holds 15ml Includes 2 bottles