Description: 6pcs Hex Shank Spade Bit Flat Boring Bit Wood Drill Bits Set 10-25mm Specification: Material: High Speed Steel Cut Hole Size (Dia) :10mm,12mm,13mm,16mm,18mm,25mm Shank Size: 1\/4" (6.35mm) Hex Shank Total Length: 15cm (L),allow 1-3mm measurement error. USES: mainly used in trepanning Quantity: 6pcs \/ Set Features: Durable and excellent workmanship. Three pointed ends enable edge positioning more accurate,enhance work efficiency. Easy to use,fit for various drills(bench drill, DC\/AC electric hand drill). Ideal for Wooden planks,Fiberboard,Particle board,Plywood,Plastic,Alumiumn Board ,etc. Suitable for DIY, Home and General Building\/Engineering Using. 6 specifications(10 mm, 12 mm, 16 mm, 18 mm, 20 mm, 25 mm) meet your working demands. Package Included: 6pcs x Hex Shank Spade Bit More Details: