13PCS DIN338 HSS twist drill bits set

Technical Data

1. Material & Process: Complies with DIN338 standard, right-hand cutting with regular N-type spiral flutes.
2. Dimensions: 13 sizes typically range from 1.5mm to 6.5mm (e.g., 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, etc.). Straight shank, 135° split point (118° optional).
3. Other Specs: Surface finish is usually amber; alternative finishes like black oxide are available. Packed in a metal box for storage and transport.

Advantages

1. HSS boosts heat resistance and durability, working stably even when drilling hard metals at high speeds.
2. Full grinding ensures precise dimensions and smooth holes without burrs. The 135° split point enables self-centering, avoiding deviation without pre-punching.
3. Spiral flutes facilitate efficient chip evacuation and lubricant distribution, reducing friction and heat buildup.
4. The 13-piece set covers common metric sizes for diverse needs; the metal packaging keeps bits organized and protected, easy to carry to worksites.