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Vincita Lightweight Specialized Quick Release Seat Post Clamp for Carrier Fixation for Mountain Bikes, BMX and Road Bikes For seatpost diameter: 27.2mm
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Amazon.com: Xotic Tech Seatpost Saddle 7x10 Clamp EAR + Ti Bolt Kit for CARBON RAIL, Compatible with Specialized S-Works : Sports & Outdoors
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TOSEEK Full Carbon Fiber SeatPost Bike Road MTB Bicycle Seat Post Titanium Screws Diameter 27.2mm 30.8mm 31.6mm
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