The tool- Solid carbide high-performance drill with through coolant– Grade: WJ30EJ, K30F, Tinal/AlCrN multilayer– Diameter range 3–20 mmBenefits for you- Reduced manufacturing costs thanks to optimum tool use (the number of grooves indicates the service stage of the drill)– Maximum carbide mass for maximum process reliability– 360° coolant coverage for maximum cooling effect