15W LED Aluminum Printed Circuit Board 1.al base 1.6mm,copper 1oz 2 ... .diameter:90mm 4.TAIYO ink 15W LED Aluminum Printed Circuit Board1.al base 1.6mm,copper 1oz2.thermal conductivity ... Punching, CNC Route, CNC V-Cut10Testing100% Compute Short/Open Circuit Test11The Minimum Hole Diametersingle-sided 0.8mm, PTH 0.3mm12The ... Colorwhite, black, blue, yellow, red 15W LED Aluminum Printed Circuit Board