... 1.5mm 3. Min. hole size: 0.5mm 4. ROHS Street led lamp board:AL,copper thickness:2oz, 2 Layer board ... Free, RogersBoard thickness: 0.21mm to 7.0mmCopper thickness: 0.5 OZ to 7.0 OZCopper thickness in hole: >25.0 ... ! OEM services providedCertificate: ROHS, UL, ISO9001-2000, ISO14001Factory direct price Street LED Lamp Board