Chromag Seat Q/R Revolution Bikes March 5, 2014 Chromag Seat Posts Seat QR Our QR features a unique bushing that contacts the entire cam surface for the smoothest, most powerful action possible. The brass bushing is precision machined to press-fit perfectly into the collar and mate with the lever cam. The combination of a precision brass bushing and the smooth cam action of the lever makes for the most enjoyable lever experience. A 6mm bolt ensures reliability. Features: Brass bushing interface that contacts the entire cam surface Long rounded-surface lever 6mm bolt CNC polished and hard anodized available in 30mm, 32mm, 35mm and 36.5mm(Trek) Weight: 50g Colours: Black / Pewter / Red / Gold / Blue / Purple / Green For more information please contact your local dealer. Or us directly from our contact page.