At 19g (22g for 34.9mm), this is one of the lightest seatpost clamps on the market. The Carver clamp features a full titanium construction and an M6 stainless bolt (M5 on 34.9mm clamp). These clamps are suitable for most seat tubes with a 31.8mm or 34.9mm outside diameter.
As with all titanium-on-titanium interfaces, use Ti-Prep anti-seize compound to prevent turning your clamp into a one-piece!