Features:
Made of premium aluminium alloy material,high strength,anti-rust and durable.
Easy to change 100 * 15 mm front hub into 110 * 15 mm,or change 142 * 12 mm rear hub into 148 * 12 mm. (optional)
Easy to install and use.
Useful accessory for bike lovers.
Specification:
Model: 18.9 * 3 mm / 21 * 5 mm (optional)
Color: Red / Black (optional)
Material: Aluminum Alloy
18.9 * 3 mm: Fit for 142 * 12 mm to 148 * 12 mm(for rear hub)
21 * 5 mm: Fit for 100 * 15 mm to 110 * 15 mm(for front hub)
Weight: Approx. 1.2 - 2.2 g
Package weight: Approx. 3.2 - 4.2 g
Package List:
2* Spacers