We are Shanghai Well-Sun Precision tool Co.,Ltd, located in Shanghai, China.Our company had offter a tools for nail pruning implements which different others---- Tungsten Carbide Nail-Drill(pls.check the attached ). 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; 6080teeth, and also 100 teeth for special purposes. The bits are with gold plated, less friction, less heat created, and less vibration.Our bits shank sizes can be 1/8 or 3/32.We hope we can supply you our good quality naildrill bits. Please contact CHRISTINE with no hesitate, we are sure any of your inquiry will get our prompt attention & reply.