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HSS double headed twist drill bits:HR001-1 blcak finishedHR001-2 edge groundHR001-3 edge ground tin coatedHR001-4 fully ground brightHR001-5 fully ground black finishedHR001-6 fully ground tin coated Size(mm): 1-20mmDIN338, DIN340, DIN345, DIN1897
Packing: Inner: PVC bagOuter: Carton
other size and design can be accepted by your customers' request
HSS double headed twist drill bits