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Feature
Made of high quality NITI alloy, after heat activation treatment becomes golden colorGood flexibility, high quality cutting efficiency and fracture resistance
Recommended rotary speed of engine files is 150-350r/min
6pcs per pack, available for single or assorted sizes
Torque: 2.0-3.0 n.cm , Size :S1-F3 21mm ,SX 19mm
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