Heller trijet sds plus hammer bits heller 26747 2 this 6 x 260 x 200mm trijet sds plus hammer bit from heller is part of a new generation of hammer bits designed to give powerful fast and consistently high performance made from extremely wear resistant tungsten carbide alloy for a long service life supplied singly heller 26747 2 2618 trijet sds plus hammer bit 6 x 260 x 200mm single