1. Material: made of good quality tin plated iron, lightweight and durable. They can easily be carried in your jeans pockets and do not feel bulky at all. They are sturdy and open and close easily. 2. External size: about 2.36inch x 1.85inch x 0.59inch(length x width x height); Inner size: about 2.22inch x 1.75inch x 0.57inch (length x width x height). Volume capacity: about 30mL 3. Design: the round edges are smooth without burs and are seamlessly, protecting your hands from damage. The top and bottom are permanently attached, so you never have to worry about losing the lids. Don't put any liquid in it, because there is no rubber seal, the liquid will overflow. 4. Wide application: can be applied to storing various tiny things, such as candies, pills, earring, guitar picks, jewelry craft, paper clip, drawing pin, nail art and small USB flash drive, etc,. Perfectly for storing and protecting the aids, spare batteries, etc. 5. Package includes: come with 4Pcs black & floral metal rectangular empty hinged tin boxes