Specifications: Material: Aviation grade Ti6AL4V (TC4) Titanium Alloy Surface Treatment: Surface PVD process, uniform color and bright color Grade: Grade 5 Standard: DIN 7991 System of Measurement: Metric Size: Thread Diameter x Length Thread Diameter: M5 Thread Pitch: 0.8mm Length: 10mm 12mm 15mm 20mm 25mm 30mm (Including Head Length) Colour: Gold / Rainbow / Silver / Black