General description The Makita HSS TiN Metal Drill Bit Set includes 19 pieces designed for professional use. The drill bits feature a titanium-nitride coating that minimizes friction, keeping the work area clean and preventing damage or staining. The HSS construction makes these bits suitable for both alloyed and non-alloyed steel. Technical specifications 19 pieces included Drill bit sizes: 1.5mm (2), 2mm (2), 2.5mm (2), 3mm (2), 3.2mm (1), 3.5mm (1), 4mm (1), 4.5mm (1), 5mm (1), 5.5mm (1), 6mm (1), 6.5mm (1), 7mm (1), 8mm (1), 10mm (1) Other information Includes a hard carry case for organized storage