Masonry drill made of high quality alloy steel 40Cr (metal construction part) and tungsten carbide tip YG8C
(drilling tip) with tip's hardness 88°HRc (+/-2°) and point angle 130°.
Special shape of soldered tungsten carbide tip ensures quick and central drilling.
Cylindrical shank with patented multi-channel KVS spiral with symetric shape on total length,
guarantees stable and dynamic characteristics when drilling (reduction of vibration), what significantly
enlarges drilling capacity as a result of quick chips removal from the hole and extends drill's working life.
The shank is with reduced clamping up to diameter ø13.0mm.
Heat treatment and surface sandblasting reduces drill's wear and enlarges durability on inside stresses
which appear while using.
Suitable for industrial purposes when using drills with clamping in 3-jawed drill chucks for drilling
in masonry, concrete, granite and other natural stones.
According to DIN-8039.
Attention: to protect the drill bit against damage and faster wear out, it is recommended to apply
gradual drilling, consisting in predrilling with drill bit ø10mm and 200mm in length.
Next the drilled hole should be reamed with drill bit ø12mm in diameter and 400mm in length.