3pcs HSS TiN coated Tube and sheet drills set with Spiral Flute (arc groove)

Innovative and improved spiral flute and arc groove appearance, make the performance more outstanding, cutting speed, smooth chip removal, smooth and round hole wall.

Size:3-14mm,5-20mm,16-30.5x76mm

Higher dimensional precision the drills will last considerably longer while maintaining the precise process tolerances.The ideal tool for sheet metal working in the following sectors of industries:electrical,heating technics,automotive,mechanical engineering,switching systems,aviation.

The tough drills is suitable for all standard industrial materials: nonferrous metal,special steel,thermoplastics and duroplastics as well as sheet metals up to 3,0 mm thickness.