Titanim Side-Split keyrings are a great, stronger replacement to stainless steel keyrings. Since they are titanium they will not be affected by the magnets if you use a magnetic quick release keychain accessory. They can be pushed sideways to open which makes using them easier to use. They are also much stronger than stainless steel version and retains its shape longer.
This variety pack comes with 6 total titanium side-split keyrings with outside diameters of 20mm (small), 26mm (medium) and 32mm (large). It comes with two of each size.