Dutton-Lainson Dutton Lainson 6500 Series Trailer Wheel Bearing Set 0.75" Spindle. Trailer Wheel Bearing Set 21777 (Model 6501) features a 0.75" spindle (outer diameter). The inner diameter of the outer hub is 1.938". Compatible with outer and inner bearing cone number 09067. Compatible with outer and inner cup number 09195. Features of Dutton-Lainson 21777 Dutton Lainson 6500 Series Trailer Wheel Bearing Set 0.75" Spindle 6500 series wheel bearings Includes 2 bearings with races 1 grease seal and 1 cotter pin Outer Diameter of Spindle: 0.75" Inner Diameter of Outer Hub: 1.938" Compatible with outer and inner bearing cone number 09067; Compatible with outer and inner cup number 09195 Package Contents: Dutton-Lainson 21777 Dutton Lainson 6500 Series Trailer Wheel Bearing Set 0.75" Spindle Dutton-Lainson 21777: Dutton Lainson 6500 Series Trailer Wheel Bearing Set 0.75" Spindle