TOOL WORTH HSS STEP DRILL 4-20 TIN COATED

TOOL WORTH HSS STEP DRILL 4-20 TIN COATED

• 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,

Specification:

Size: 4-20mm
Allow 1-3mm measurement error.
Material: High speed steel
1X Hex Titanium Step Drill.