These bearings fit perfectly and work great for the Spyderco Southard. These bearings are ceramic housed in phosphor bronze washers and are much much smoother than the bearings that come stock in the Southard which are stainless steel bearings housed in some sort of plastic possibly teflon which in my knife did not have a very good action. Would highly recommend as replacement bearings for the Spyderco Southard. Great seller shipped quickly highly recommend.