yeah, it takes a little practice to get the cones in tight but not too tight. If you have done BBs then you can work on the hub no problem. It will take you a little time to get the cones right your first time. BTW only unscrew one side, otherwise you will need to realign the axle when you put it back together. you can use grease to "glue" the bearings in place when you put the axle back in and rethread the cone. You dont need special tools to do this work, two wrenches that fit the cones flat edges will do in a pinch, but cone wrenches are easier to work with.