The product you're describing seems to be a set of coin capsules designed to protect and preserve coins. Here's a breakdown:

• Quantity: 100 pieces
• Size: The capsules come in 5 different sizes, suitable for coins with diameters of 17mm, 20mm, 25mm, 27mm, and 30mm.
• Material: They are made of clear plastic, allowing easy visibility of the enclosed coins.
• Purpose: These capsules serve to protect coins from dust, scratches, and other damage, while also preserving their condition and value.
• Versatility: With multiple sizes included, the set is versatile and can accommodate a variety of coin sizes, making it suitable for collectors with diverse collections.

Overall, this product provides a convenient and practical solution for storing and protecting coins of various sizes.