Now able to cover the 61- to 81-mm diameter range, ISCAR's (iscar.com)  DR indexable twist drills are optimized for use on all steels, alloys and cast iron. Their hardened cartridges are resistant to chip erosion and ISCAR's HARD TOUCH coating on the inner drill flutes reduces friction, optimizes chip evacuation, and improves overall surface finish, with the ability to accommodate 10-, 11- and 12-mm2 inserts with two chipformer types and three grades: IC 808, 908 and 8080. 

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