55mm HSS Drill Bit Hole Saw for Stainless Steel Metal Alloy Wood M4x12mm you can use this method

you can use this method to expand the M12 thread to M16

Type: DPDT

good match for the original part

Salt resistant

55mm HSS Drill Bit Hole Saw for Stainless Steel Metal Alloy Wood M4x12mm you can use this methodHole saw is made of HSS high speed steel, durable for impact resistance, wear resistance. Hole drill bit is through a special heat treatment, sharp edge, high precision, smooth cutting and high strength. Openings for stainless steel, iron, aluminum, and various types of pipes. Hole saw creates a hole in the work piece without having to cut up the core material. Hole saw is perfect for Installing Locks, Knobs in Doors and Cabinets in Seconds, which