General description SwissTech 4.80MM Heavy Duty Cobalt Long Series Drill is designed for high-performance drilling in non-alloyed and alloyed steels. With a parabolic flute design, this drill excels in chip breaking, making it ideal for long chipping materials with a tensile strength of up to 1,300 N/mm². The TiN coating enhances tool longevity, allowing for drilling up to 5 times the diameter. Technical specifications Drill Diameter: 4.8 mm Flute Length: 87 mm Overall Length: 132 mm Point Angle: 135° Helix Angle: 28° Web Thickness: Strengthened Drill Length Type: Long Series Material: Cobalt High Speed Steel Cutting Direction: Right Hand Finish/Coating: TiN Coated Series: 4000 Tolerance of Diameter: h8 Tolerance of Shank: f11 Shank Type: Straight Standards Met: BS 328, DIN 340 Other information