Easy to use if you assemble it correctly. Does have a large dead volume after packing but usually can use the extra grease after installing the bearings. This tool has been around for decades in one form or another and is a great help. It does need some attention when inserting the bearing, you need to ensure that the bearing taper (if being used with tapered bearings) faces against the taper of the tool and that it is properly centered. See the included photo. TIP: don't bother cleaning it after use, just put it in a ziploc bag and it will be already pre-bled next time you need it
Rating: [4 of 5 Stars!]