Wheel Bearing PackerLincoln Wheel Bearing Packer Bearing packer head only; for bench mounting or attachment to any Lincoln air operated economy, series 20 or 40 grease pump. Services bearing 1 3 4" to 9 1 2." OD with minimum ID of 9 16." Accepts grease through fitting from high pressure control valve or hand gun. For bench mount use 1 2" pipe flange. Model No. 102891 Description Hand held greasing tools and accessories bearing packers.