#20 – Threaded Shank Adapter Drill Stub Length

• 1/4-28 Threaded Shank provides a secure fit in the tool holder
• HSS
• Black oxide finish for increased wear resistance and added lubricity
• 135° split point for fast penetration and accurate starting (self-centering) which eliminates “Walking” and reduces the thrust force needed
• Used in portable angle drilling tools drilling low tensile strength materials in confined areas