Johnson Duramax Cutless Naval Brass Sleeve BearingsDiameters are precision fitted to the shaft size with correct clearance for efficient water lubrication. These Naval Brass Sleeve Bearings adapt equally well to strut and stern tube mounts, and often used effectively as rudder stock and pintle bushings. Diameters are precision fitted to the shaft size with correct clearance for efficient water lubrication. Thin shelled units are available for struts of small craft. For shaft sizes: 3 4" to 6 1 2" (19.