.7L Replacement Drill Bit Nico Medium PMXSPJC188. Convenient replacement set for the Ford 6.7L Diesel Broken Fuel Injector Bolt Kit. Precision ground point, flutes, body clearance, and drill diameter for ultimate performance. Exceeds aerospace specifications for accuracy and drilling capabilities. Drilling metals introduces many challenges including the hardness of the metal, accessibility, and the thickness of the material. Finding quality drill bits to meet the above conditions is becoming more difficult today. ProMAXX Toolâ??s gold tooling is machined turned right here in the USA and engineered to not only handle a wide variety of material types and hardnesses, but it is also manufactured to a specific tolerance to ensure the most accurate and trouble-free drilling today. That is why we call it tooling, the same high quality used in high-speed machine shop operations. As a technician, we know your time is valuable, so we designed our bits to punch through quickly and accurately to deliver the predictle results you expect.