Features:Chrome plated brass material, durable and reliable.Exquisite mirror surface treatment, smooth and great hand feeling.Electroplating processing, shiny, bright and beautiful appearance.With slotted drives + lace design, it is easy to tighten with a coin or your hand.Fit for PC water cooling system.Specifications:Name: water cooling plugThread specification: G1/4 (2 minutes), the actual outer diameter is 12.9MMMaterial: BrassSurface treatment: chrome platingSeal: seal with siliconeSize: straight through 18MMApplication: PC water cooling systemPackage weight: 55gQuantity: 5pcsPackage List:5 x PlugNote:Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.