Material: Key Tags are made of environment-friendly plastic and stainless steel, strong, wearable and portable, each key tags has a paper laber in side with a clear window cover it. Size:luggage id labels length is about 5cm/1.96inches,the width is 2.2cm/0.86inches,the Keyring diameter 1.9cm/0.7inches.Identify your items quickly and easily. Easy to use: write what you like such as the number of the key on the paper card insert,so can see the key name cleary which you need. Function: Suitable for labeling keys clearly and easily,no need to spend time on finding the right key,prevent keys going missing or muddled up Wide use:They can also be used as pet name tags,luggage tags memory sticks and so on,it is a necessity for living, home and office.