ZS
| diameter (D) | total length (L) | flute length (L1) |
| 1.00-1.20 | 36 | 14 |
| 1.35-1.50 | 40 | 18 |
| 1.55-1.70 | 43 | 20 |
| 1.75-1.90 | 46 | 22 |
| 1.95-2.10 | 49 | 24 |
| 2.15-2.35 | 53 | 27 |
| 2.40-2.65 | 57 | 30 |
| 2.70-3.00 | 61 | 33 |
| 3.10-3.30 | 65 | 36 |
| 3.40-3.70 | 70 | 39 |
| 3.80-4.20 | 75 | 43 |
| 4.30-4.70 | 80 | 47 |
| 4.80-5.30 | 86 | 52 |
| 5.40-6.00 | 93 | 57 |
| 6.10-6.70 | 101 | 63 |
| 6.80-7.50 | 109 | 69 |
| 7.60-8.50 | 117 | 75 |
| 8.60-9.50 | 125 | 81 |
| 9.60-10.60 | 133 | 87 |
| 10.70-11.80 | 142 | 94 |
| 11.90-13.20 | 151 | 101 |
| 13.30-14.00 | 160 | 108 |
| 14.50-15.00 | 169 | 114 |
| 15.50-16.00 | 178 | 120 |
| 16.50-17.00 | 184 | 125 |
| 17.50-18.00 | 191 | 130 |
| 18.50-19.00 | 198 | 135 |
| 19.50-20.00 | 205 | 140 |
ZS
Product performance:
Applicable to iron,die steel,cast iron,aluminum,aluminum alloys,nonmetal and graphite,etc.
Applicable to high-performance drilling.the enhanced drilled core and ordinary blade length,with its rigidity enhanced,is suitable for four to five times diameter of the drilling.
Applicable to higher spindle speed and feeding speed,it increased the drill’s life span.The processing procedure is efficient with a high degree of surface finish,and further processing is needless.
