Photo 1 of GANOPPER Seatpost Shim 34.9 to 30.9 mm Bushing Bicycle Seat Post Adapter Tube Sleeve Adapter for Birdy 34.9mm Dropper Seatpost MTB Folding Bike

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Photo 1 of GANOPPER Seatpost Shim 34.9 to 30.9 mm Bushing Bicycle Seat Post Adapter Tube Sleeve Adapter for Birdy 34.9mm Dropper Seatpost MTB Folding BikePhoto 2 of GANOPPER Seatpost Shim 34.9 to 30.9 mm Bushing Bicycle Seat Post Adapter Tube Sleeve Adapter for Birdy 34.9mm Dropper Seatpost MTB Folding Bike