3 Flute Rougher-Finisher for Stainless Steel - Series 117 Series 117 3 Flute Rougher-Finisher for Stainless Steel. View Speeds and Feeds page. Features: Designed for aggressive slotting and pocket milling Best in in low and high carbon steels, stainless steel, titanium and high temperature alloys K-land corner radius is standard for corner edge protection An eccentric relief cutting edge allows for 25% more strength Run extremely smooth at maximum speeds Standard with TiCN (Part Number ending in 2) and Advanced AlTiN (Part Number ending in 4) coatings