100% 4130 Chromoly construction. Triple butted steer tube with integrated bearing race. Internal threaded with an aluminum dual-wrench compression bolt. Fluted, butted and tapered legs, 4mm thick dropouts w/ 30mm offset. 20 sizes available in 3/8 or 20mm axle versions (20mm comes with 3/8 adaptors).

Spec:

• Height: 315mm
• Steerer Tube Length: 163mm
• Bearing Race: Integrated
• Offset: 30mm
• Compression Bolt: 25×1.5mm
• Compression Bolt Tool: 6mm or 8mm allen key
• Weight: 34.7 oz