M4 M5 Aluminum Alloy Anodized Countersunk Head Bolt Washers Gasket Cone Colours Feature: Material: Aluminum Alloy Type: Countersunk Head Washers Surface Treatment: Anodize M4 Hole Diameter: 4mm Outer Diameter:10mm Thickness:2.5mm M5 Hole Diameter: 5mm Outer Diameter:12mm Thickness:3.5mm Colour:Dark Red/Rose Red/Golden/Royal blue/Sky blue/Black/Silver/Green/Purple/Orange Package Included:According to your choice.
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