鶹 Vine Customer Review of Free Product( What's this? )
This kit is not designed like some other internal pullers that I have - the teeth are inserts that wedge inside the bearing against the ball races. After destructively removing the ball separators with your prying tool of choice, insert the teeth between the balls and twist 90 degrees to key into place. It’s a clever design for bearings that are already on a one-way trip to the scrap pile. I noticed one reviewer thought the teeth were copper - I can confirm they are in fact steel, with a thin copper-coloured (or perhaps actual copper plating) coating. The components seem robust and has long reach for deep bores like AWD rear diff housings - you just need something for the center screw to push on, which may not always be present. Be sure to lubricate the center screw threads before use.