Carbide burrs 1, superior quality 2,durable in use 3,dependable performance 4, complete in specifications The Rotary carbide files more information as follow: TypeNo.d1mmd2mml1mml2mmSE-41M33385.5SE-41ML233505.5SE-41ML333755.5SE-53M53387.1SE-1M66509.5SE-1ML6661609.5SE-51M6.33479.5SE-3M9.566016SE-3ML69.5616616SE-3MNF9.566016SE-5M12.766622SE-5ML612.7617222SE-5MNF12.766622SE-6M1666925SE-6MNF1666925SE ...