COMPATIBILITY: Clamp Size: 34.9mm with adapter to 31.8mm. Used to stop chain drop. Decreasing chain jump. Compatible with 9, 10, 11,12 speed single chainring crankset.
STRONG: The body is made of AL6061-T6 hardened aluminum with quality plastic guard.
EASY TO USE: Simply clamp on the seat tube, and stops chain dropping. Please watch the video in the listing for more details.
LIGHT: The package weight is only 44g = 0.09lbs. So it is not adding a lot of weight to your bike.
ORDER NOW, WORRY FREE! We're so confident about our product quality that we can provide a 2 year warranty!
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