High speed steel bits for fine drilling. Ideal for craft and hobby applications. Suitable for drilling wood, plastics, alloys and soft metals. Compatible with micro chuck hobby tools, including Silverline, GMC and Dremel. Includes sizes 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90, 0.95, 1.00, 1.20, 1.30, 1.40, 1.50 and 1.60mm.