ZEC INDUSTRY CO.,LTD
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made of high carbon steel or chrome vanadium (crv) with brad point and 2 shouldered cutting spurs.
* centre point enters first; prevents "skating".
* cutting flutes are engineered for optimum chip ejection so drill will not bind and burn out.
* for drilling accurate, splinter-free holes in soft wood, hard wood, plywood and hardboard.
* use in hand drills, electric portable drills, drill presses and lathes.
| Metric System | |||
| Diameter | Overall Length | Shank Diameter | |
| 3 | 60 | 3 | |
| 4 | 75 | 4 | |
| 5 | 85 | 5 | |
| 6 | 90 | 6 | |
| 7 | 105 | 7 | |
| 8 | 115 | 8 | |
| 9 | 120 | 9 | |
| 10 | 120 | 10 | |
| 11 | 150 | 10 | |
| 12 | 150 | 10 | |
| 13 | 150 | 10 | |
| 14 | 150 | 10 | |
| 15 | 150 | 10 | |
| 16 | 160 | 10 | |
| 17 | 160 | 13 | |
| 18 | 160 | 13 | |
| 19.0 | 160 | 13 | |
| 20.0 | 160 | 13 | |
| 21.0 | 160 | 13 | |
| 22.0 | 160 | 13 | |
| 23.0 | 160 | 13 | |
| 24.0 | 160 | 13 | |
| 25.0 | 160 | 13 | |
| 26.0 | 160 | 13 | |
| British System | ||
| Diameter | Overall Length | Shank Diameter |
| 1/8" | 2-3/8" | 1/8" |
| 9/64" | 2-7/8" | 9/64" |
| 5/32" | 3-1/16" | 5/32" |
| 11/64" | 3-1/8" | 11/64" |
| 3/16" | 3-1/2" | 3/16" |
| 13/64" | 3-11/16" | 13/64" |
| 7/32" | 3-23/32" | 7/32" |
| 15/64" | 3-27/32" | 15/64" |
| 1/4" | 3-31/32" | 1/4" |
| 17/64" | 4-1/8" | 17/64" |
| 9/32" | 4-3/16" | 9/32" |
| 19/64" | 4-11/32" | 19/64" |
| 5/16" | 4-7/16" | 5/16" |
| 21/64" | 4-23/32" | 21/64" |
| 11/32" | 4-25/32" | 11/32" |
| 23/64" | 4-25/32" | 23/64" |
| 3/8" | 5" | 3/8" |
| 25/64" | 5-1/32" | 3/8" |
| 13/32" | 5-3/16" | 3/8" |
| 27/64" | 5-11/32" | 3/8" |
| 7/16" | 5-1/2" | 3/8" |
| 29/64" | 5-5/8" | 3/8" |
| 15/32" | 5-3/4" | 3/8" |
| 31/64" | 5-3/4" | 3/8" |
| 1/2" | 5-3/4" | 3/8" |
| 9/16" | 6" | 3/8" |
| 5/8" | 7" | 3/8" |
| 3/4" | 7-3/4" | 3/8" |
| 7/8" | 8-1/4" | 3/8" |
| 1" | 8-3/4" | 3/8" |