NICHOLSON TUNGSTEN CARBIDE ROTARY BURR FILE #T3G-C, 1/4 SHANK. Model number came off the burr itself. I believe this has been superseded by the current model, #T3JW, but am not certain. This is very old, came from a machinist's estate. This will still be going strong long after the cheap Chinese crappy ones are dull and dead. Condition is good used. Shipped with USPS First Class Package. See other auctions for other rotary burrs - I can ship all of them for the cost of shipping just one burr.