joemars jim3250 & jm528d super drll edm are specially designed for drilling hard materials, such as hardened steel or alloys, tungsten carbide in ranges of 0.2mm-3.0mm advanced technology from joemars, - always toward fut......joemars jim3250 & jm528d super drll edm are specially designed for drilling hard materials, such as hardened steel or alloys, tungsten carbide in ranges of 0.2mm-3.0mm advanced technology from joemars, - always toward future a newly developed sparking circuits special for super drill dem to enhance machining speed, excellent flushing, lower wear & higher accuracy.
