Alfa Tools S160155 Number 55 High-Speed Steel Jobber Drill (12 Pack)

Alfa USA jobber length drill bits are ideal for portable or machine drilling in low-tensile strength alloy steels and for other applications. These drills meet all aircraft manufacturing standards and feature a heavy duty 135 Degree point for self-centering and quick penetration. Heavy duty web geometry provides added rigidity to resist tensional strain when drilling up to three times the drill diameter. Suitable for cotter pin hole drilling and cross hole drilling in heads of bolts. Black Oxide finish for general purpose drilling in a wide range of materials, equipment and operating conditions.