Series 1024 HSS-Co Heavy Duty Straight Shank Drills | Tin Tipped – Metric | Heavy-duty drill used to drill steels with a tensile strength up to 1,400 N/mm2. Stainless steels, heat and acid resistant steels and phosphor bronze. TiN coating provides longer tool life. | Point angle: 135?. Helix angle: normal. Web thickness: strengthened. Relief angle: normal. | Tolerance of diameter: h8. | Manufactured to DIN 338 RN.