Lincoln Model 689 Economy Grease Pump. This 50:1 Ratio Pump features the proven design of the Series 20 Air Motor and a simplified Pump Tube to provide a low cost alternative for Grease dispense. Unit includes the LIN-91499 Drum Cover, and LIN-282716 Pump with LIN-245852 delivery Kit. Follower plate (LIN-84775) is not included. Designed for 25-50 lbs. pails.