... to pad space6milMin drill diameter8milMin via pad24milMax board sizeSingle and double sides:550mmX1100mm;multilayer:550mmX640mmMin solder mask dam6milMin solder ... legend height25milSilk legend colorWhite/ yellow /blackData file formatGERBER file and corresponding drilling file,PROTEL series,PADS2000,POWERPCB series,ODB++ ... slice up, Solder ability. laptop Electronic Multilayer PCB Board with led pcb