Speed KO kit, Conduit, SS 1/2x2 inch, 1-7/32 inch. SPEED PUNCH® saves time and money with every hole. Up to 3X's faster setup and disassembly. No-Thread punch design eliminates cross-threading. Available for Stainless Steel - 1/2 to 2 inch conduit size. Mild Steel - 1/2 to 4 inch conduit size. Metric ISO-16 to ISO-63. 22 and 30 mm for Oiltight push buttons.