Features: Bronze Tempered (Bronze Oxide) Surface Treatment High Speed Cobalt Steel Tool Material ANSI ? Tap Standards 4D Usable Tool Depth to Diameter Ratio Drill Point 135 Morse Taper Shank Right Hand Rotation / Cutting Precision Twist Drill 209CO taper shank drill bits can be used in machining applications where the drill is held directly in the spindle. they are a very versatile choice and are available in many fractional sizes from 1/4" to one and a half inches. The bronze oxide finish helps prevent workpiece material from sticking to the cutting edges of the tool for a clean and accurate finish, whilst the 135 degree thinned point helps with self-centering and reduces the push force required. 209CO drill bits are manufactured from premium High Speed cobalt so are suitable for drilling many materials, including aluminum, stainless steel and steels. Details: EAN number: 086071214164 EDP number: 021416 Product name: ISO 209CO1.1/4 Ordering code ANSI: 209CO1.1/4 Gross weight - grams: 1447.2 Cutting diameter - fractional inch (DC): 1.1/4 Cutting diameter - inch (DC): 1.25 inch Cutting diameter - millimeter (DC): 31.75 mm Length chip flute - fractional inch (LCF): 7.7/8 Overall length - fractional inch (OAL): 13.1/2 Overall length - inch (OAL): 13.5 inch Overall length - millimeter (OAL): 342.9 mm ANSI: 209CO1.1/4 ISO: 209CO1.1/4