RockBros Titanium Brake Post V-brake Bosses Conical Head Bolt M10 X 1.25m 2pcs & M6*18mm 2pcs Brand: Rockbros Type: U-Brakes Bosses: M10 x 1.2 Bolt: M6*18MM Conical Head 2pcs Material: Ti-6Al-4V Titanium Alloy