From Leading German Manufacturer KEIL

SDS-plus W2 Hammer Drill Bit X-Shape

The symmetrical X-shape tip construction of the 4-cutting edges with one main cutter and two auxiliary cutters provides for accurate and correct guidance of the drill bit.
The geometry with 4-cutting edges protects the bit against damage when impacting on armouring iron.
The design of the head construction significantly decreases friction in the hole so that the tool life is considerably extended.
Short flute entries and large volume borehole cut channels in the double spiral provide for fast spoil removal.

• Stability Against Torsional Loads
• Precise Hole
• Reduced Noise Emissions
• Rapid Spoil Removal due to Large Grooves and Double Helix
• Protection of Man and Machine
• Noticeably Longer Life

A few advantages of the 4-cutting edges:

• Optimum Vibration Behaviour
• Reduced Friction
• Maximum Transfer of Energy
• Guided Centrally

Fits directly into all hammer drilling machines with SDS-plus and HILTI TE-C drive.
Suitable for drilling plug holes and particularly suitable for fastenings.