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 :
DeWalt 20V Impact Wrench, Grease Gun Combo Kit - DCK397HM2, Tools: Auto Body Toolmart
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 M18 FUEL 18V 1/2 in. Lithium-Ion Brushless Cordless Impact Wrench with Friction Ring & Grease Gun with Two Batteries 2767-20-2646-20-48-11-1862 - The Home Depot
2767-22GG - Milwaukee 2767-22GG - M18 Fuel 1/2" High Torque Impact Wrench w/ Friction Ring Kit, w/ Grease Gun
Milwaukee 2767-22GG M18™ High Torque Impact Wrench W/ Grease Gun Kit M