This simple product allows almost any 15x100mm T-axle front hub to run with road standard 12x100 T-axle forks. (or this can also be used to adapt most 12x100mm T-axle forks to accept 15mm T-axle hubs)CNC machined 7075 alloy tube.Anodised finish.Lightweight at only 17g.15mm OD, 12mm ID x 100.(98.5mm long)