... sink exter diameter: 127*64mm surface treatment:anodizing Extrusion led bulb heat sinkexter diameter: 127*64mmsurface ... punching,stamping,milling,CNC maching,polishing2 Surface treatments for heat sinkclear anodizing, oxidation process, powder coating, brushing, sandblasting ... upon request reasonanable price +power deliveryWelcome to inquiry for us.! Shenzhen Enner Electronic Technology Co;LTD www ...