Our multipurpose high-quality six-piece mixed HSS drill bit set is ideal for all metal, alloy, plastic and wood drilling tasks. These drill bits set made from titanium coated high-speed steel are hard and heat resistant. These drill bits are versatile and are designed to drill metal, plastic and wood at great speed. Set comprises 2, 3, 4, 5, 6, and 8mm bits. Suitable for use with all conventional hand and power drills to drill materials such as metal, alloys, plastic and wood. Begin drilling slowly and never use sideways or apply undue pressure. Lubrication is recommended when drilling metals.