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.Fitted wooden case to fit PH Tool's EDM Slot Sizing Block, Drilled Hole Sizing Block, or FAST Sizing Block. Note: cases shown in photo may