Milwaukee SDS Plus RX4 Drill Bits have an embedded solid one piece carbide centring tip for easy spot drilling and long lifetime. Four symmetrical 90º cutting edges guarantee perfect round holes for anchor fixing, as well as reducing the risk of the drill bit jamming when hitting rebar. The drill bits\' high volume flute geometry ensures optimum dust removal. The 4 spiral flute design and thicker core body provide low vibration and low uniform flute wear. Suitable for drilling brick, concrete, reinforced concrete and natural stone. Each 7 piece set comprises one of each of the following sizes: 5 x 110mm, 6 x 110mm, 8 x 110mm, 6 x 160mm, 8 x 160mm, 10 x 160mm, 12 x 160mm. Counter display of 6 sets.