Steel Burs I/Cone RA No.5 - ISO.016 Made in the UK. Manufactured to exceed stringent ISO, FDA and CE approval SPC (Statistical Process Control) techniques are used at the earliest stages of manufacture eliminating any critical defects minimising vibration and potential handpiece damage while reducing patient discomfort Supplied with a proprietary coating to prevent corrosion when sterilised prior to use Made from heat treatable allot steels giving the optimum hardness, strength and reliability