| 采用优质合金钢制成，经热处理（ HRC58-62 ） | | 精密加工平行度公差不超过 0.02mm | | 符合德国 DIN7168 质量生产标准 | | 20 件套含 : 2 x 5, 2 x 10, 2 x 15, 2 x 20, 3 x 6, 3 x 11, 3 x 16, 3 x 21, 4 x 7, 4 x 12, 4 x 17, 4 x 22, 5 x 8, 5 x 13, 5 x 18, 5 x 23, 6 x 9, 6 x 14, 6 x 19, 6 x 24. | | 4 件套含 : 8 x 11, 8 x 16, 8 x 21, 8 x 26, 8 x 31, 8 x 36, 10 x 13, 10 x 18, 10 x 23, 10 x 28, 10 x 33,10 x 38, 12 x 15, 12 x 20, 12 x 25, 12 x 30, 12 x 35, 12 x 40, 14 x 17, 14 x 22, 14 x 27,14 x 32, 14 x 37, 14 x 42. | |
