1. Material: 45# carbon steel;
2. Surface treatment: nickel plated;
3. Hardness: 42HRC;
4. Specifications: 8mm, 10mm, 12mm, 13mm, 14mm, 17mm, 19mm, 21mm, 22mm, 24mm, 27mm, 30mm and 32mm;
5. Package: 1 set/ bmc packing.
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