25.0mm HSS Stub Drill 0.9843" Flang10.9M8x35Z Flute length 3
Baker’s notes & crumb story
Description
25.0mm HSS Stub Drill 0.9843" Flang10.9M8x35Z Flute length 3 Flute length 3 Differentiated heat treatment: edge 54 58 HRc impact head 38 46 HRc to prevent head effect