Bicycle Seatpost - 6061-T6 Aluminum Single Bolt Twin Rail - Ultra Lightweight & High Strength - for Mountain & Road Bikes

❤️ Dear customer, thank you for your visit! We provide high-quality products with the following specifications:Name: Single-Bolt Double-Rail Seat PostMaterial: Aluminum Alloy 6061-T6Colors: Black, Purple, Red, BlueLength: 400mmDiameter: 25.4/27.2/28.6/30.4/30.9/31.6mmFeatures: High-strength aluminum alloy material, anodized sandblasting process, fine workmanship❤️ If you have any questions or need assistance, please contact us via your preferred email, and we will respond quickly within 24 hours, dedicated to providing you with excellent service!

• [High-Strength Aluminum · Anodized Sandblasting]:Constructed from high-strength aluminum with anodized sandblasted finish and thickened anti-slip design, balancing aesthetic appeal with rugged durability for competitive riding safety.
• [Single-Bolt Dual-Rail · Quick-Lock System]:Compatible with channel saddles, the single-bolt dual-rail structure locks securely via a 6mm hex key. The circular clamp design ensures tight engagement for hassle-free installation and vibration-free riding.
• [Multi-Angle Pitch Adjustment]:Loosen the screws to adjust the clamp angle for precise saddle pitch customization, adapting to various riding postures and enhancing long-ride comfort.
• [10.9-Grade Screws · Multi-Spec Compatibility]:Features high-strength 10.9-grade 6mm screws with thick threads for even force distribution and anti-slip performance. Available in 25.4-31.6mm diameters and 400mm length to fit most bike models.
• [Anodized Oxidation · Laser-Engraved Markings]:Anodized surface treatment improves hardness and corrosion resistance, while laser engraving creates scratch-proof, fade-resistant markings without mechanical deformation, revealing the base material's natural color.