Heller HSS-R Twist Drills DIN 338 RN Metric - Heller 18472 4, These 3.21mm HSS-R twist drills from Heller are ideal for drilling in unalloyed steel. Sold in packs of 10. Heller 18472 4 0901 HSS-R Twist Drills DIN 338 RN 3.2mm - 10 Pack
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