BBB PostFix clamp for seatpost

This clamp is mounted directly on the seatpost, and prevents the seatpost from 'falling down' This is especially important on MTB bicycles, where the saddle in known to 'fall down' during your ride.
Weights only 5 grams.
Can be used for both aluminum and carbon seatposts.
Choose between 31,6 and 27,2 mm.