taper shank twist drills
size:6-100 all kinds Non-standhard size we can produce material:HSS
| dia | over all length | flute length |
| 5-5.2 | 133 | 52 |
| 2.5-6 | 138 | 57 |
| 6.2-6.5 | 144 | 63 |
| 6.8-7.5 | 150 | 69 |
| 7.8-8.5 | 156 | 75 |
| 8.8-9.5 | 162 | 81 |
| 9.8-10.5 | 168 | 87 |
| 10.8-11.8 | 175 | 94 |
| 12-13.2 | 182 | 101 |
13.5-14 | 189 | 108 |
| 15.5-16 | 218 | 120 |
| 16.5-17 | 223 | 125 |
| 17.5-18 | 228 | 130 |
| 18.5-19 | 233 | 135 |
| 19.5-20 | 238 | 140 |
| 20.5-21 | 243 | 145 |
| 21.5-22 | 248 | 150 |
| 22.5-23 | 253 | 155 |
| 23.5 | 276 | 155 |
| 24-24.5 | 281 | 160 |
| 25 | 281 | 160 |
| 25.5-26.5 | 286 | 165 |
| 27-28 | 291 | 170 |
| 28.5-30 | 296 | 175 |
| 30.5-31.5 | 301 | 180 |
| 32-33.5 | 334 | 185 |
| 34-35.5 | 339 | 190 |
| 36-37 | 344 | 195 |
| 38-40 | 349 | 200 |
| 40.5-42.5 | 354 | 205 |
| 43-45 | 359 | 210 |
| 45.5-47.5 | 364 | 215 |
| 48-50 | 369 | 220 |
| 50.5 | 374 | 220 |
| 51-53 | 412 | 225 |
| 54-56 | 417 | 230 |
| 57-60 | 422 | 235 |
| 61-63 | 427 | 240 |
| 64-67 | 432 | 245 |
| 68-71 | 437 | 250 |
| 72-75 | 442 | 255 |
| 76-80 | 514 | 260 |
| 81-85 | 519 | 265 |
| 86-90 | 524 | 270 |
| 91-95 | 529 | 275 |
| 96-99 | 534 | 280 |
| 100 | 534 | 280 |
taper shank twist drills
