adopting the 6542HSS material,through the special treatment,entire heat treatment,the hardness 65-68 HRC,using life is double times than normal drill,cutting fast and clean fast,surface yellow heat treatment for a better ani-resistance,especially for driling the stainless steel
| product NO. | size | BOX/cin(pcs) | Gro,/Net weight lkgl | ctn size lom) |
| BK – 5 16 5 0 1 | 5 pcs | 5 0 / 10 0 | 15 / 14 | 4 0 x 2 5 x 18 |
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