It paid for itself after the first use. It's a very good idea to keep the bolt threads greased, it really helps to keep things moving smoothly and may keep the bolt from trying to strip or break if things start getting tight. I also grease the two washers for the bolt. I would not use an impact when seating the new bearing as over-tightening can damage the bearing and/or the tool. There are better quality kits out there like OEM tools, Powerbuilt, or even Maddox at Harbor Freight, but this one was about half the price of those. This one works just fine if you take the time to get firmiliar with how it works, watch a video or two on YouTube if you're unsure. This kit is perfect for the \"at home\" mechanic or \"weekend wrencher\", I would not use it in a shop setting where it would see multiple uses every day. But, for changing out a wheel bearing now and then, it's perfect. I plan to use it for the front bearings on my atv as well next week. To sum up, it makes changing pressed in bearings possible without a hydraulic press.
Fred Smit 
