This tool is for temporarily bending back a skate blade that has been hit and deformed during a game. Insert the bent part between the ball bearings and press down the upper bearing to get the blade straight. Adjustable rollers and can be mounted to work bench.
This tool allows fast checking if you have even edges underneath the skate blade. You attach both parts as pictured. If the outer edges are even, then the part that is lying on the skate blade edges will be parallel to the line on the other part. Otherwise the edges are uneven.
Now built with a hardened layer to improve strength and durability!