37 BLANK KEYRINGS: Included in this set are 37 blank rectangular photo frame keychains made of premium acrylic and measuring 1.35" x 2.15" (3.4 x 5.4 cm) total. These keychains can hold up to 1" x 1.45" (2.5 x 3.5 cm) photos. The metal keyring itself has a diameter of 0.87" (2.1 cm). EASY TO ADJUST: These keychains are easy to adjust. Simply slide your image into the blank portion of the keychain and gently press the top back down to close. They also look great with dried flowers inside. Once closed, they won't open. HIGH-QUALITY SET: When you receive this keychain set, you'll notice that each keychain is individually wrapped. This is to prevent the keychains from being damaged during transit. The keychains are small, lightweight, and fit neatly with your keys. They are also impact-resistant, making them great for businesses, events, promotions, giveaways, souvenirs, and schools. ENDLESS POSSIBILITIES: Because these keychains come unzipped, they can be customized just the way you want. You can put a picture of your boyfriend, girlfriend, husband, wife, or mistress inside. Great for your family photos and as a birthday or Christmas gift. You can also put a picture of your cat or other furry friend inside so they're never far from you. You can even put your contact information in case you lose your keys.