I bought this to replace wheel bearings on a Polaris 4x4. Very happy with the quality and ease of removing and installing the bearings. It's a lot stronger than I expected and saved a lot of time changing bearings. The expansion of the warehouse takes only a few minutes. Removing or replacing bearings requires no hammer blows, punches, bars or special tools. The kit includes a variety of mandrels and drivers in different sizes to fit most bearing sizes. The only downside is that there are no instructions included. I found something online and taped it to the top of the box for future reference. Apply a liberal coat of grease to the threads and remember to install the new bearing before pressing it in and check squareness frequently.