The 57H090 drill set from Graphite includes 25 cobalt drills for metal drilling. It includes 5 drills with diameters of 1-13mm and lengths of 34-151mm. They are made from high-speed steel with 5% cobalt alloying (HSS-Co). Their high mechanical and thermal resistance allows them to drill various types of metals, such as stainless steel or heat-resistant steel. Their head has a 135° tip, capable of opening holes without the need for a pre-existing hole. They comply with DIN338 standards.

The dimensions of the drills are as follows:

• Diameter 1mm: Length 34mm, Useful length 12mm
• Diameter 1.5mm: Length 40mm, Useful length 18mm
• Diameter 2mm: Length 49mm, Useful length 24mm
• Diameter 2.5mm: Length 57mm, Useful length 30mm
• Diameter 3mm: Length 61mm, Useful length 33mm
• Diameter 3.5mm: Length 65mm, Useful length 36mm
• Diameter 4mm: Length 75mm, Useful length 43mm
• Diameter 4.5mm: Length 80mm, Useful length 47mm
• Diameter 5mm: Length 86mm, Useful length 52mm
• Diameter 5.5mm: Length 93mm, Useful length 57mm
• Diameter 6.5mm: Length 101mm, Useful length 63mm
• Diameter 7mm: Length 109mm, Useful length 69mm
• Diameter 8mm: Length 117mm, Useful length 75mm
• Diameter 9mm: Length 125mm, Useful length 81mm
• Diameter 11mm: Length 142mm, Useful length 94mm
• Diameter 12mm: Length 151mm, Useful length 101mm