I used these
https://www.homedepot.com/p/BrassCra...X-C1/205214414 From Home Depot. They do not stock the 1/4 turn at the store they only stock full turn which cost less. You can order and have them delivered to the store. Or if your order is larger enough they will deliver to your home. They are not available at Lowes. Someone asked how long does it take to replace. Well what took me the longest time was draining the line. The toilet line is the lowest point in the piping. My suggestion is to shut the water off, open all faucets in the house, flush toilet and remove water from tank with sponge or vac, remove the toilet valves with a pan under each. Go somewhere and relax for awhile when the water stops dripping finish the job. My house had 14 valves and took 4 or 5 hrs to do. You also need supply lines $6 or $7 each. Another hint toilets and ice maker valves are easy. Before you even try to do a sink valve go under your sink and shut off one valve and disconnect a supply line, it is not as easy as it sounds. The older you get your body does not contort to the positions it may need to be in.