1. Material: aluminum alloy 2. Applicable models: mountain bikes, road bikes, folding bikes 3. Angle: plus or minus 7 degrees / plus or minus 17 degrees 4. Easy installation and easy disassembly 5. Sturdy and durable, long service life 6. Diameter: 31.8x28.6mm 7. Length: 60/70/80/90mm 8. Weight: 94.5-128.7 grams (the weight is slightly different for different lengths)
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