Minute Key Stainless Steel Split Key Ring in the Key Accessories department at Lowes.com
Quick Release Key - Etsy
Magnetic Quick Release Clasps 17mm Dia with Split Key Ring
Amazon.com: DAYGOS Key Chain Quick Release Key Ring, Heavy Duty Car Keychain Holder Clip with Easy Detachable Valet Key Ring for Men and Women : Clothing, Shoes & Jewelry
Quick Release | Key Releases | Lucky Line Products