Masonry bits are for use in chucks up to 13mm capacity and are suitable for general purpose drilling including bricks, blocks and cement render when used in an impact or percussion drill. Roll formed and treated body with a heavy-duty Tungsten Carbide tip and fast spiral for quick waste removal.
Function: These double end center drills are traditionally used to make a conical hole for a lathe center in order to make a starting point for a standard twist drill, designed to prevent the twist drill from walking.
These center drills got quick cutting speed, and good chip removal.
Size: 5 Drill diameters:1/1.5/2.5/3.15/5mm (5 pieces),different diameters can meet your need on spotting drill bits.
Shape: Each bit has a double end and grinding at a standard 60 degree Angle.
General-purpose drill, to drill steels with tensile strength up to 1.000 N/mm2, cast steel, grey cast iron, malleable cast iron, nickel brass and graphite.
The additional split detail permits better positioning and reduced feed force and torque.
TiN coating provides longer tool life or increased cutting speeds.
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