2 PCS FMFXTR Bicycle Seat Tube Reducer Sleeve Conversion Sleeve, Specification:, 27.2mm To 25.4mm, 28.6mm To 25.4mm, 28.6mm To 27.2mm, 30.4mm To 27.2mm, 30.8mm To 27.2mm, 31.6mm To 27.2mm, 33.9mm To 27.2mm, 33.9mm To 31.6mm

1. Aluminum alloy material, strong and durable, not easy to rust
2. Simple installation, convenient and practical
3. Use: seat tube reducing sleeve (large to small)
4. Material: aluminum alloy
5. Specifications: 27.2mm to 25.4mm, 28.6mm to 25.4mm, 28.6mm to 27.2mm, 30.4mm to 27.2mm, 30.8mm to 27.2mm, 31.6mm to 27.2mm, 33.9mm to 27.2mm, 33.9mm to 31.6 mm
6. Size: about 6cm/piece
7. Weight: 27.2mm to 25.4mm about 11g/pc, 28.6mm to 25.4mm about 20.5g/pc, 30.4mm to 27.2mm about 22g/pc, 30.8mm to 27.2mm about 25g/pc, 31.6mm to 27.2mm about 31g/piece, 33.9mm to 27.2mm about 49g/piece, 33.9mm to 31.6mm about 69g/piece