With two cutting edges and one centring point, Starrett SDS drill bits set deliver fast and efficient drilling with hammer action, thanks to its 130-degree tip angle. These drill bits come with high-performance carbide tips that feature a unique two-channel design and chip removal/breakage accelerator. This design ensures optimal performance and long-lasting durability thanks to its specialist heat treatment. Features and Benefits Special flute geometry designed to give fast material penetration and maximum debris removal Split point 130 to achieve accurate and fast drilling with hammer action; less pressure required for penetration Precision ground carbide tips for consistent performance Contains 1 of each size: 5 x 110mm, 5.5 x 110mm, 5.5 x 160mm, 6 x 110mm, 6 x 160mm, 7 x 110mm, 7 x 160mm, 8 x 160mm & 10 x 160mm. Applications Suitable for: Alloy steels, carbon steels, cast iron, hardened alloy steels, stainless steel, wood and soft materials Approvals and Standards Metri