If you don't have 2 people to do the job, I'd look for 'pistol' type handle that you can operate with one hand so the other can rotate the wheel. I know it's possible to use one hand and your body for the 'arm' type but to me it's more hassle and more likely to move around and pop off.
Any auto parts store should have them, as well as alternate fittings... hoses if you want a flex attachment..etc..
Check your axle manufacturer for grease spec... probably NLGI #2, but you should probably check.
2015 RAM 1500 4x4 5.7, 3.93
2013 Econ 16RB TT