I need to do the rear brakes on my wife’s transportation appliance (2013 Kia Rio) so I need a rear caliper tool. I’ve only ever used the whole kit with different attachments but don’t own one and this is way cheaper, so does anybody know if it’s worth a damn? Is it like a socket or what? There’s another one that’s a cube with different patterns on each face too.

https://shop.advanceautoparts.com/p/performance-tools-caliper-tool-w80627/11942103-p?c3ch=PLA&c3nid=11942103-P&adtype=pla_with_promotion&gclsrc=aw.ds&&gclid=Cj0KCQjwhuvlBRCeARIsAM720HpVFlUx3MvN4UTMFStsovQkGtVhRHIi90lHHxGoEuJ2ZY2-Lzk_lYEaAmU1EALw_wcB

I also might have to just pad slap, the rotors are $65 each and we're not gonna be keeping the car more than another year or so and my wife hasn't worked since Xmas so money is quite tight.