A Solution for seatposts that slip. The lower clamp secures the frame, while the upper clamp secures the seatpost- Self-aligning bolts and anchors with spherical washers ensure consistent clamping force- Machined from 6061 aluminum in Minneapolis, MN- Seatpost clamp will need to match both the diameter of the frame seat tube and the diameter of the seatpost- Seat tubes must be round and within +/-0.5mm of specified size