Features:
Material composition: Made of a combination of high-speed steel (HSS) and cobalt alloy to enhance the drill bits' hardness, heat resistance, and overall strength
Hardness: Cobalt steel drill bits are extremely hard, typically with a Rockwell hardness rating of 66-68 HRC which make cutting through tough materials without dulling quickly possible
Heat resistance: Significantly improves the drill bit’s heat resistance compared to regular HSS drill bits and reduces the risk of overheating and prolonging their lifespan
Abrasion resistance: Excellent abrasion resistance and can maintain the drill bit’s cutting edges for a longer time, even when drilling through hard materials like stainless steel or cast iron
Precision and accuracy: Designed to provide precise and accurate drilling; perfect for applications where accuracy is crucial, such as metalworking and machining
Versatility: Suitable for drilling through a wide range of materials, including metals, alloys, stainless steel, cast iron, and harder materials like titanium or hardened steel

Projobber 135° split point Cobalt steel drill bit improved centering, reduced drilling pressure, faster cutting, and improves chip evacuation compare to 118° split point HSS drill bit.

Drill Bit Dimensions:
Diameter: 5.0mm
Flute length: 52mm
Overall length: 86mm

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