General description of this box of drill bits :

For all core drilling machines with 19 mm Weldon attachment, as well as stationary drilling machines with a quick-change chuck. Allows you to carry out all drillings in tubes, offset or overlapping drillings (for oblong drillings) without problems.

The advantage of the core cutter over the twist drill lies in the machining of a thin ring instead of the entire surface to be drilled, which requires significantly less force. No pre-drilling is necessary, the core is ejected by the ejector needle. All these advantages allow work up to 40% faster.

Contents of the box :

• 14 mm
• 16 mm
• 18 mm
• 20 mm
• 22 mm
• 24 mm

Technical characteristics of these core drills :

• Drill diameter: 14 - 24 mm
• Drilling depth: 25 mm
• Stem: Weldon 19mm
• Recommended cutting speed: approx. 20 – 25 m/min.