I used this to rebuild my caliper and it worked great just make sure you clean out the inside of the piston first or the dirt gets caught in the grooves on the grip part and doesn’t work as well
I purchased this tool to remove the pistons from my brake calipers. Tool worked well. Makes removing the pistons much easier.
The disk piston was locked pretty tight in the caliper I bought this tool for. This tool has too little surface area to grip inside of piston, and squeezing the handles to spread the grippers apart brings handles together so much there is not enough outward force to grip piston wall. This is a tool with too little and too much.