MCTi Mountain MTB Bike Disc Brake Rotor Titanium Allen Hex Tapered Head Bolts Screw M6x8mm 4 Packed Gold Size: M6x8mm Allen Hex Taperd Head; Color Available: Colorful,Gold,Ti Material: 6AL/4V (TC4) Titanium Alloy, Grade 5; Weight: 2.02g/piece. Thread Pitch: 1mm; Thread Diameter: 6mm; Head Diameter: 10mm; Head Height: 5.99mm; Key Size: 5mm; MCTi Brand Trademark Bolt is with high performance, corrosion-resistant, light weight, high strength and durability functions. Original Brand Packed. Many applications especially in sports, mountain bike, bicycle, motorcycle, automotive, racing, aerospace , medical industry and DIY areas.