Home Depot sells a small Grease gun for $15.86. I was going to go to my local hardware shop to buy a bolt and zerk adaptor and create a tool buy to transfer the grease into the M90 and behind the bearings to pop them out with pressure. Though the threaded hose that comes in this kit can be tapped directly into the bearing holes bypassing the 2-3 bolt/zerk tool making(like the guy in the youtube video).