Abstract: A tool for deburring tubes of different diameters comprises means for securing the tool in a lathe or another rotor machine, a holder united with said tool securing means and holding a number of cutters, and a guide stud, which is substantially coaxial with the holder and the tool securing means and comprises a substantially conical portion which faces away from said tool securing means and is intended to center the tube to become deburred with respect to said cutter holder. The cutters have deburring edges, which face away from the tool securing means and are located in grooves in the holder. The cutters and the guide stud are elastically movable with respect to each other under the influence of spring means to hereby automatically adjust the location of the cutting edges of the tool to the diameter of the tube or bushing to become deburred.