Draper Combined HSS/Masonry Drill Bit Set 17 Piece 12 titanium nitride coated high speed steel straight shank drills and five tungsten steel masonry drills in handy set Display packed in soft grip plastic case Contents: 12 titanium nitride coated HSS drills: 1 5, 2 0, 2 5, 3 0, 3 2, 3 5, 4 0, 4 5, 4 8, 5 0, 5 5 and 6 0mm: 5 masonry drills: 3 0, 5 0, 6 0, 8 0 and 10mm