KODIAK 1.980" Pro-Lube Bearing Kit Converts trailer from Grease to Oil with your Existing Hubs Fits 1.98" hubs and 3500-lb axles,Seal for 1.72" spindle Not for use with 1.68" spindleKit includes:1 Bottle of bearing lubricant 8oz , 2 Inner oil seals for a 1.72" spindle 2 Oil bath caps for 1.98" hub bores Aluminum housing with threaded plastic outer cap. Cap includes rubber o-ring and removable center plug for adding oil lubricant. Requires 2oz per side.