TCT Masonry Drill Bit Set (5 Piece) - 13618 - Draper 14105, The Draper Masonry Series drill bits are heavy-duty and precise.Made from an alloy-steel with a professionally ground tungsten carbide tip for a faster cut and longer service life.The precision ground flutes with 135° tip angle ensures efficiency when drilling into dense building materials.Suitable for use with concrete, brick, stone, slate and all masonry.Compatible with a standard 10/13mm chuck. Draper 14105 TCT Masonry Drill Bit, 5.0 x 85mm - 14105