High Carbon Tap Threads the Drilled Hole to 1/8-27 NPT - Thread Size Compatible with GlowShift EGT Probes, Boost Sensors or Compression Fittings 1/2 18 Tap Drill Size UK Sale The featured 1/8 NPT Tap is used for tapping EGT probes and boost gauge fitting holes for gauge sensors that will deliver optimum results directly from the source. GlowShift | 1/8-27 NPT Male to Male Restrictive Barbed Fitting Adapter 1/8-27 NPT Tap And Drill Bit Kit GlowShift 1/8-27 NPT Drill & Tap Kit - 1/8" Carbon Steel Tap & R High Speed 1/8 NPT Tap Kit GlowShift 1/8-27 NPT Drill & Tap Kit is the Perfect Accesory to Use for Installing an EGT Probe to the Exhaust Manifold or Boost Sensor to the Intake Manifold GlowShift's 1/8-27 NPT Drill and Tap Kit is the perfect kit for anyone looking to drill and tap directly into the exhaust manifold or intake manifold. The featured 1/8-27 NPT Tap is used for tapping thermocouple EGT probe and boost gauge fitting holes for gauge sensors that will deliver optimum results directly from the source The cobalt finish increases lubricity and chip flow and can be used in various applications. The size R high speed steel drill bit's overall length is 4 3/4 inches with a 118° point that drills the perfect hole to tap into.
