... T5. 2.Color:Clear anodized,or customized. 3.CNC turning,milling. LED tunnel lamp extruded aluminum heat sink ... all burrs & sharp edges, punching,Drilling, Trimming, Cutting, CNC machining, wire-drawing, etc.3.Surface Treatment: Mill finished, Polished, ... , Powder coated, Chromating, Passivating, Electrophoretic coated and etc.4.Purpose: Heat sink, Decoration, Electronic equipment frame, Production line ...