Name: Cartridge Filled Silicone Plug Material: Silicone Weight: 15g Color: Random Size: 4mm Package: 40/60 Pcs / Set Note: 1. There is 2-3% difference according to manual measurement. Please check the size carefully before you buy the item. 2. Please note that slight color difference should be acceptable due to the light and screen. 3.if there are something wrong with the quality, quantity and the type of the product, please fell free to contract our customer service. 4.Thank you for your kindly understanding!