Review on Korky 2001TP Universal Toilet Tank Flapper (3 Pack): Easy Install, Long-Lasting Rubber Seal, Made in USA by David Burns

I do repairs for tenants in a management company. I've changed hundreds of toilet valves. I've removed all of the default crackers at one point or another. When I started, I just grabbed whatever the hardware store had for the lowest price. It took me several months to realize that some flappers are better than others. The worst are the ones with hard plastic swivel arms. Long story short, I started using red scrubs a few years ago and I really like them.