WTP's Helix hub guards are designed to work on the drive and non drive side of The Helix freecoaster and replace the cones for a perfect fit without having to spread your dropouts.Includes heat-treated chromoly adaptor to replace hub cone nuts for perfect fitCompatible with Helix V1 and Helix V2 freecoaster hubs and many other "KHE" style freecoasters on the market