The item is a bicycle seat tube reducer sleeve. It converts seat tube sizes from 30.8mm to 27.2mm.
Product type: Bicycle Seat Posts
Material: Aluminum alloy
Compatibility: 30.8mm to 27.2mm
Key feature: Simple installation
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 31.6mm
Size: approximately 6cm per piece
Weight: 27.2mm to 25.4mm about 11g per piece, 28.6mm to 25.4mm about 20.5g per piece, 30.4mm to 27.2mm about 22g per piece, 30.8mm to 27.2mm about 25g per piece, 31.6mm to 27.2mm about 31g per piece, 33.9mm to 27.2mm about 49g per piece, 33.9mm to 31.6mm about 69g per piece
