Slippery Pete Mini Pistol Grip Grease Gun. Heavy Duty Design for 3oz Cartridges. 12 inch Flexible Hose and 5 inch Rigid Extension Pipe;

Slippery Pete's MINI Pistol Grip Grease Gun has it ALL, at a BARGAIN PRICE I built a testing apparatus and tested these guns out myself. Check out the third picture on the listing, it pumped up to 3000 PSI with no problem, although generating over 500 PSI is really not necessary for pumping grease into your standard Zerk Fitting.
These MINI GREASE GUNS are easy to load and the coupler snaps on and off grease fittings with ease. I prefer the MINI myself, because its light and compact, that means I can fit it into tight spaces.
NO MATTER WHAT YOU'RE GREASING, SLIPPERY PETE CAN HANDLE THE JOB!