Heller bionic pro sds plus hammer bits heller 26009 1 these 10 x 150 x 150mm bionic pro sds plus hammer bits from heller have rounded cutting edges and an innovative spiral design which provides efficient removal of drilling dust supplied in packs of 50 heller 26009 1 2018 bionic pro sds plus hammer bit 10 x 150 x 150mm pack of 50