... ,9341,M2,M35,M42 Zirconium Coating, Black, Coffee Color HSS Double Ended Twist Drill BitsProduct Description:HSS Twist Drill Bits ... , Double EndedFully Ground4341,9341,M2,M35,M42 3.0mm-6.5mmWhite, ... end drill bit.* used primarily in small machine shops and automatic body shops for drilling holes for sheet metal screws or rivets ...