Precision machined from high-grade 6061 aluminium, Nukeproof Turbine headset spacers are engineered to the most exacting of tolerances to cope with the demands of elite-level gravity riding. Product description Black with laser-etched graphics, Turbine spacers are available in a range of sizes for perfect adjustment. Top features Made from high-grade 6061 aluminium.Fits 1.1/8” steerers.Pack of three (5mm, 10mm, 15mm).Laser-etched graphics.