GlowShifts 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 size R high speed steel drill bits overall length is 4 3/4″ with a 118 point that drills the perfect hole to tap into. The cobalt finish increases lubricity and chip flow and can be used in various applications.

Drill Bit Details:

• Diameter: 0.3390″
• Finish: Cobalt
• Material: High Speed Steel
• Type: Jobber Drill Bit
• Drill Size: R
• Flute Length: 3-7/16″
• Number of Flutes: 2
• Overall Length: 4-3/4″
• Shank Size: R
• Drill Style: Letter
• Weight: 0.1035 lbs

Tap Details:

• Thread Type: NPT
• Tap Drill Size: R
• Diameter: 1/8″
• Finish: Bright
• Material: High Carbon
• Thread Diameter: 1/8″
• Thread Size: 27
• Type: Pipe Tap
• Number of Flutes: 4
• Overall Length: 2 1/4″
• Weight: 0.0613 lbs