edm slotEDM Slot Sizing Block. This block contains nine EDM slots from 0.100 to 0.900 deep. Slot width is 0.011. Nominal depth is laser engraved on the side of the block. In accordance with PH Dwg.HPEDM Precision Erowa Stainless Steel Slot D10 mm D72 mm Electrode Holder for Cnc Edm Wedm HE