Material: Aluminum Alloy Head + Stainless Steel Thread
Colour: Royal blue/Green/Golden/Dark Red/Black/Silver/Purple/Rose Red/Sky blue/Orange
Thread Diameter: M3 (3mm)
Thread Pitch: 0.5mm
Head Diameter: 12mm
Head Thickness: 6+6=12mm
Length: 4mm - 80mm (not including the head)
For specific parameters, pls refer to photo 2.
Packing: Plastic bag / Carton box 
Tolerance range: ±1-2mm