Material: Aluminum Alloy
Colour: Aluminum Color
Surface Treatment: Anodizing
Shape: Round & Unthreaded
Specification Eg: 2.1mm x 4mm x 1.5mm ( Inner Diameter (ID) = 2.1mm; Outer Diameter (OD) = 4mm, Length (L) = 1.5mm)
Application: Use for assembling electronics, machinery, car models, aircraft models ande ect.