Fits 1" forks with threadless, integrated, & internal headsets Included Heights: 2, 3, 5, 10, 15, 20mm (1 of each size) Material: Full 3K carbon fiber FLAT MATTE finish Diameter: 1" (25.6mm), Outside Diameter: 31.65mm Weights (grams): Set 24.6g- 2mm: 1.0g, 3mm: 1.3g, 5mm: 2.1g, 10mm: 4.5g, 15mm: 6.7g, 20mm: 9.0g) OMNI Racer is small young U.S. company with a passion for cycling and dedicated to bringing cyclists some of the most innovative, lightweight, and high quality cycling components to riders that seek only the lightest and best quality products. OMNI Racer's products are engineered to optimize the best structural properties of carbon fiber and high strength alloys, creating components at extremely low weights.