For those of you who are stuck for a hubguard solution or are running a looseball rear hub, clat have came up with the Servo Universal hubguard. CNC machined out of super tough Chromoly, the Servo is only 1.8mm thick and slides on over the top of the existing hardware and protects your hub from damage. Note: This universal design will fit the majority of hubs on the market, but there may be rare exceptions. Material: 4140 Chromoly. Features: Universal deisgn, fits over exisitng hardware on most hubs. Weight: 121g / 4.25oz.