We specially manufacture precision carbide tools, also nail drill bits like the tools listed on your website. Our naildrill bits are made on cnc machine tools, and fine grain sizes carbide material is selected. We can make very fine nail drill bits, with 16; 20; 25; 32; 36; 60;80teeth, and also 100 teeth for special purposes. The bits are with gold plated, less friction, less heat created, and less vibration.And the can used right-left two ways cutting.Our bits shank sizes can be 1/8í¦ or 3/32