15PCS Fully Ground HSS Left Hand Drill Bit Set for Metal Drilling with Metal Box(TM-DBS-L15)
HSS Left Hand Drill Bit Set
Size 1/16", 3/32", 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32" , 1/2"
Material HSS 4241 4341 6542-M2 (Cobalt 5% M35 is Also Available)
Process Fully Ground
Standard DIN338 / Jobber Length (Screw Machine Length is Also Available)
Point Angle 135 Degree Split Point (118 Degree is Available)
Flute Type Type N Left Hand Cutting (Left Hand Broken Screw Extractor is Available)
Surface Finish Titanium Coating (Bright, Amber Color, Black & Gold, Black Oxide, Rainbow Color are Also Available)
Features :
1.Left hand drill bits are ideal for extracting broken, righthand threaded studs and bolts.Designed for use in reversibledrills, lathes and milling machines.2.Unlike right handed drill bits, the drilling action will assist to loosen sheared off bolts or studs rather than tightening themfurther.And made for drilling into hardened steel bolts for creating pilot holes for screw extractors.3.These unique drill bits are used with your drill operating in reverse and are designed to aid in drilling out broken and sheared bolts and studs4.Left Hand Jobber Drills for use in left hand rotation of multiple spindles, gear driven drilling heads, screw machine operations, and lathes.5.Bit is constructed of M2 high speed steel for the best combination of strength, heat resistance, and wear resistance.6.The fully ground twist drill bit has a more precise concentricity.7.135-degree split point reduces feed pressure and allows for easier penetration without work hardening.