Our diamond burs are made in the USA from the finest grade surgical steel and coated with premium quality diamonds. Our burs are FDA and ISO9002 approved. You receive diamond bits that cut quickly and smoothly. All A&M diamond dental burs are guaranteed to be free of defects in materials and workmanship. All HP diamond burs have a 2.35mm (3/32") shank and are 44.5mm (1 3/4") in length. These US made diamond bits are designed for fast, smooth cutting and long life. 1.2mm Needle $5.95 1.8mm Needle $5.95 4.8mm Cone or Needle $6.95 Thank you for visiting A&M Instruments, Inc. Diamond Dental Burs. You will be pleased with the high quality of your dental burs and dental discs. All of our diamond and carbide cutting tools are made in the US, in Alpharetta, GA. Copyright® 2003-2011 A&M Instruments Inc 770-772-6404