HHIP 5000-0501 High Speed Steel Step Drill with 6 Steps, Tin Coated, 3/16-1/2" x 1/16" Hole Range, 3/8" Step Depth, 1/4" ShankR$ 177,59Amazon
HHIP 6003-2021 CCMT 21.51 Tin C5 Coated 80 Degree Diamond Positive Rake Carbide Insert, 1/4" ICR$ 179,00Amazon