This friction grip diamond bur is a supercoarse gingival curettage. The head is 1.9mm in diameter. The head length is 9.5mm. The ISO maximum speed for this diameter bur is 160,000 RPM. This diamond bur is made for air powered, high speed dental handpieces. Overall length of the bur is 22mm (7/84"). Shank is 1.6mm (1/16"). Availability: Usually ships in 2-3 business days 1,9mm Gingival Curettage Long T6SC$3.45 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