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High Speed Steel Burs are known for their hardness & durability. They also stay sharper longer than conventional tungsten vanadium burs. HSS burs are hand fluted which means they may not have the consistency of tv burs. HSS burs have 3/32 shanks and are sold individually. High Speed Steel burs are identified by number (1-34) and are sized in millimeters from 0.9 to 11.1. Not all sizes are available in every shape.
The pre boxed sets, in wooden magnetic closing boxes, contain different amounts of burs in the more popular shapes to allow the customers to replace the most used sizes.
90-34 contains 1 of each size of the 90 degree HSS burs
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