Dormer a095 ti n coated tipped hss jobber drills in a plastic case ideal general purpose engineering drills these sets use the dormer a002 general purpose jobber drills which are made from high speed steel with ti n coated for high wear resistance lower friction longer life with good self centring capability on a wide range of materials particularly suitable for aluminium and other abrasive materials ideal for drilling wood and chipboard suitable for both hand and machine use din338rnbs328iso 23