The Ingco 19Pc Drill & Screwdriver Bit Set is a testament to lasting quality and professional craftsmanship. Ingco tools are committed to delivering affordability without compromising on performance. This set includes 19 pieces, featuring 7 HSS rolling twist drill bits (2mm, 3mm, 3.5mm, 4mm, 4mm, 5mm, 6mm), 4 masonry drill bits (4mm, 5mm, 6mm, 8mm), and 8 25mm screwdriver bits (SL4.5, SL5.5, PH1, PH2, PZ1, PZ2, T20, T30).