SunRace M4 7-Speed Cassette Range:12-34T } Extra-strong magnet keeps the

} Extra-strong magnet keeps the drinking tube in position during your activity

7 degrees of backsweep orients the bar where your hands want to be

(mm) 36Spring Weight 571

13-tooth upper and 19-tooth lower aluminum pulley wheels with Grade 3 Silicon Nitride balls

SunRace M4 7-Speed Cassette Range:12-34T } Extra-strong magnet keeps theThe SunRace M4 7 Speed Cassette is a lightweight cassette that utlizes Super Fluid Drive technology. Lightweight design Features Super Fluid Drive technology ED black sprocket finish Range 11 28, 12 34 Cogs 11 13 15 18 21 24 28, 12 14 16 18 22 28 34 Cassette Body Type Shimano HG Drivetrain Speeds 7 Color Black Weight 248, 311 Defined Color Black