Many of our frames come with integrated seat clamps, but if yours does not then don't worry, we make a slim, lightweight CNC alloy seat clamp that will do the job nicely.  MATERIAL: 3D forged and cnc machined 6061-T6 alloy SIZE: 25.4mm COLOUR: Black, Red, Polished silver FEATURES: 6mm hex, 28.6mm internal diameter, 12.7mm tall WEIGHT: 20g (0.71oz)