Abstract: A honing tool comprises an hexagonally shaped mandrel having a cylindrical bore extending centrally therethrough. Six similar tool holders are each provided with a pair of spaced cylindrical gear racks having rack gear teeth formed thereon and integrally attached to an elongate tool support. A metal tool carrier to which is suitably bonded a tool, such as an abrasive cutting stone or a wiper is removably attached to a respective tool support by a clamp screw. The gear racks of each tool holder are slidably mounted in respective bearings holes in the mandrel. Gear teeth on the racks mesh with gear teeth formed on a splined shaft rotatably mounted in the mandrel bore. Thus, rotation of the shaft counterclockwise relative to the mandrel extend all of the tools outwardly to extended positions.