Ceratizit India Pvt. Ltd. Offers PCB Blanks for Printed Circuit Board Tools. Ceratizit India Pvt. Ltd is an ISO 9001:2000 certified company. PCB Blanks for Printed Circuit Board Tools are able to offer and change between various diameters and lengths of blanks within short time. It has the diameter of 3.25 +0,1 mm and length of 38.30 -0 / +0,1 mm. A wide range of grades for drills and routers is available.