Amazon.com: PTS Grease Gun Attachment for Cordless Drill Transform an Impact Driver or Drill into a Battery Operated, Electric Powered Grease Gun - with Adapter Accessories Kit, Hose and Pump Fitting :
Air Impact Wrench Care Kit - Oil, Grease, and Grease Gun - IR/105-LBK1 – Tool Parts Pros
20V Max* XR 1/2 in. Impact Wrench & Grease Gun Combo Kit | Theisen's Home & Auto
20V Cordless Variable Speed Grease Gun - Tool Only
Milwaukee M18 FUEL 18V Lithium-Ion Brushless Cordless 1/2 in. High-Torque Impact Wrench with Grease Gun Kit, Resistant Batteries 2767-22GR - The Home Depot
Milwaukee M12 FUEL 12V Lithium-Ion Cordless Stubby 3/8 in. Impact Wrench Kit with Grease Gun, One 4.0 and One 2.0Ah Battery 2554-22-2446-20 - The Home Depot