15 Piece Combined HSS and Masonry Drill Bit Set12 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
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