DescriptionThese buckles are made of alloy which is not easy to get hurt. 40pcs buckles is suitable for your underwear of all colors. When wearing this, there is no need worrying about bra moving. Especially in summer, you can wear all kinds of clothes without any embarrassments. Feature- Color: Black.- Material: Alloy.- Size: About 3.1 x 1.6 x 0.1cm.- The set includes two kinds of sizes each 20: Internal diameter 19mm + internal diameter 25.5mm.- Made of premium material, lightweight and durable for long time use.- Easy to use and effective for fasteners.- Fine workmanship, conveniently and easily used at home or in clothing shop.- Simple shape design is all-matching. Suitable for any bras.- Fully showing your special taste and personality.- Warm tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement and etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you