Heller prefix sds plus hammer bits heller 26594 2 this set from heller includes 7 prefix sds plus hammer bits from heller which are ideal for all concrete and stone applications set includes 1 each of the following bits 5 x 110 x 50mm 6 x 110 x 50mm 8 x 110 x 50mm 6 x 160 x 100mm 8 x 160 x 100mm 10 x 160 x 100mm 12 x 160 x 100mm heller 26594 2 2017 prefix sds plus hammer bits set of 7