"Expertly engineered for extreme-depth hole-making operations in demanding manufacturing and engineering environments, the Guhring HSS Series 3 Extra Length Machine Drill range is the definitive industrial choice for deep pocket penetration. Manufactured to strict DIN 1869 specifications from premium high-speed steel, these extended-reach straight shank twist drills are structurally optimized to execute continuous cutting paths up to 25 times the nominal drill diameter. Featuring a specialized GT 100 wide parabolic flute geometry and an advanced 130° point profile, these tools cleanly shear tough workpieces and forcefully sweep compact chips out of the hole channel to completely eliminate the risk of chip packing, tool jamming, or entry failure at extreme depths. This premium un-coated series delivers exceptional torsional core rigidity and uniform execution across tough materials, making it ideal for processing structural steels, mild steel, AS/NZS 3678 250 and 350 grade plate, free-cutting steels, and unalloyed case-hardened plates.

• Tool Material HSS
• Surface Finish Nitrided
• Point Angle 130 Deg
• DIN  1869
• Guhring No. 503

Click here for Series 1 | Guhring

Click here for Series 3 | Guhring