| http://www.w3.org/ns/prov#value | - ng the tool body to rotate freely about the axis, each tongue including two faces converging inwardly from the cylindrical portion wherein each tongue is substantially V-shaped as viewed along the axis, the two faces intersecting along a line inclined in a direction axially rearwardly and radially inwardly from the cylindrical portion to form an oblique angle with the axis as viewed in a direction
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