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| Size: : | 4-22 mm（6,8,10,12,14,16,18,20 22）mm |
|---|---|
| Shank: : | 6mm(dia),25mm(L) |
| Total: : | 75mm(L) |
| Material: : | High speed steel 4241 |
| Package include : | 1XHex Titanium Step Drill |
| Description |
| Features: -The ladder of its unique structure, a bit can open a variety of specifications of aperture. -Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken. -Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them was unable, but it is possible. -The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit, recommend drilling rate of 250-250 RPM. Specification: Size: 4-22 mm（6,8,10,12,14,16,18,20 22）mm Shank: 6mm(dia),25mm(L) Total: 75mm(L) Please allow 1-3mm measurement error. Material: High Speed Steel 4241 Package Include: 1 x Hex Titanium Step Drill
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