ICCONS enduro Trijet hammer drill bit by Heller (SDS-Plus) perfectly unites speed and robustness - even in reinforced concrete. The embedded carbide tip makes this drill bit extremely resilient. Users also benefit from very low vibration and positioning characteristics due to helix design. The enduro Trijet SDS-Plus hammer drill bit s also equipped with impeller cutting edge (for better dust removal), robust tungsten carbide head, and when drilling into rebar the Trijet tip has over 9 times service life when compared to trade series 2 cutter drill bits. If you are after the highest quality SDS-Plus drill bits for drilling through concrete, reinforced concrete, asphalt, clinker, marble, brickwork, stone, and granite, the Enduro Trijet by Heller is the best in the business.