Hope head doctor headset adjusterstired of re tightening your headset so are we to combat this common problem we have produced an engineered solution two aluminium wedges simply pull together and expand inside any1 18 steerer giving you a solid thread to pull the stem down sounds simple it is this is topped off with a laser engraved anodised aluminium cap and aluminium bolt note before use take apart and grease all if the internal threads and surfaces that have to slide against one ano