Token Products ARSENAL Superlite Seat Clamp with Titaium Bolts, 31.8mm Go to amazon.com Related posts 7 best seatpost clamp 31.8 FeatureAlloy clamp & locking threaded nutSize: o31.8mmO31.8mm, titanium bolt, 12.5g DescriptionToken Products Superlite Machined Alloy Seat Clamp, CNC 7075 T6 clamp and locking threaded nut, Titanium bolt, O31.8mm, titanium bolt, 12.5g.