Busch burs are produced in Germay with consistant and exacting qualtiy. They are made of Tungsten Vanadium steel. The shanks are 3/32" which will fit all standard quickchange flexshaft handpieces (They can also be used with micromotors). The burs have an overall length of 1-3/4". This item is a closeout. Quantities are limited. Non-returnable, non-exchangeable. Order Today!!!