Bike cassettes Features:
High quality Bike Cassettes
Three-layer electroplating anti-rust, exquisite wear-resistantÂ
Fine quenching-temper hardening technology.
Harder and more wear-resistant, longer life.
High-precision positioning tooth profile, efficient transmission.
Suitable for road bikes and mountain bikes.
Perfect to replace old cassette, work perfectly for optimum performance and maximum safety and longevity.
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7 Speed Bike Cassettes:

Suitable: 7 / 2*7 / 21 Speed
– Teeth: 12-14-16-18-21-24-28T
Weight: 256g
Surface: 3-layer silver electroplating
Material: High Tensile Steel plus Quenching Treatment
Design: Hollow Design Reducing Weight
Groove processing with wave-shaped chute
Flashing wear-resistant Anti-rust
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8 Speed:

– Fast and smooth shift and lower noisy clicking sound.
– It will help with different situations, like easy-to-loose cases.
– Easy to install, no need to do any adjustment to the derailleur.
– Speed: 8 Speed
– Teeth: 12-14-16-18-21-24-28-32T
– Surface Finish: Three-layer electroplating anti-rust, exquisite wear-resistant
– Compatible for: Shimano / Sram / Micro Shift system
– Weight: 269g
Contents: 1 pc/pack
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9 Speed:

– Fast and smooth shift and lower noisy clicking sound.
– It will help with different situations, like easy-to-loose cases.
– Easy to install, no need to do any adjustment to the derailleur.
– Speed: 9 Speed
– Teeth: 11-12-14-16-18-21-24-28-32T
– Surface Finish: Three-layer electroplating anti-rust, exquisite wear-resistant
– Compatible for: Shimano / Sram / Micro Shift system
– Weight: 352g
Contents: 1 pc/pack
Quantity: 1 Pc Cassette + Lock Ring