Features:

• Suit for use in hardness under 28°artifacts,The plate thickness under 5 mm
• You can use water to cooling it when it is work and it can be used for even longer
• You can use one drill for diferent aperture

• No need of center punch.Compared with the ordinary twist drill,it is not easy to break and it can be used for deburring, chamfering and open hole
• Recommend the drilling speed of 250--400 rpm

 

 

Specifications:

• Material:HSS6542
• Shank Type:Triangle shank
• Type:Spiral groove
• Size:

       003:4mm to 12mm 9 Steps (4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm) shank diameter 6mm
       002:4mm to 20mm 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm,18mm,20mm) shank diameter 8mm
       001:4mm to 32mm 15Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm) shank diameter 10mm

Package Included:

• 1pcs HSS6542 Spiral groove  STEP DRILL