Miller-Colburn Bone File
Miller-Cogburn Bone File
Long Instrument with various forms of fine ridged cutting surfaces along part of or all of its working end that is used for cutting and smoothing (filing) bone tissue. Used to smooth the bone or the narrow canals of the interior of the tooth and thus facilitate disinfection of the internal surface.
Be sure to select either the N. 3 or N. 4
175mm in lentgh
The N. 4 has a longer file on one end (as shown in image)