... heat sink exter diameter: 127*64mm surface treatment:anodizing Extrusion led bulb heat sinkexter diameter: 127*64mmsurface ... ,milling,CNC maching,polishing2 Surface treatments for heat sinkclear anodizing, oxidation process, powder coating, brushing, sandblasting,shot ... colornatrual ,black,matt black, green, red,yellow,silver,white,blue,andother,surface colors upon request reasonanable price + ...