Diamond countersink thread 1/2" 75mm with drill bit stainless steel - with slots

Drill Bit diameter	mm 008.0 or mm 010.0 or mm 012.0 or mm 014.0 or mm 016.0 or mm 018.0 or mm 020.0 or mm 022.0 or mm 026.0 or mm 028.0 or mm 030.0 or mm 032.0 or mm 036.0 or mm 045.0 or mm 050.0
Drill type	With Notches