ITEM NAME:Acrylic Transparent General Northbridge Waterblock Computer Water Cooling #JT1 Product Description Description: Acrylic Transparent General Northbridge Waterblock Computer Water Cooling Specifications: Thread Size: G 1/4" Actual outside diameter: approx. 12.9mm/0.5'' Material: Bottom: red copper Top cover: acrylic Seal: with silicone sealing ring Weight: Square: approx. 62.5g Rectangle: approx. 36.7g S Shape: approx. 38.2g Note: The first waterblock size and hole distance are not the same, need to install the motherboard north-south bridge, please measure your motherboard size first. Please allow 1-3 cm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 x Waterblock 1 x Silicone 2 x Spring Screws.Included: 1 x Waterblock. Top cover: acrylic. Square: approx. Bottom: red copper. Due to the different display and different light, the picture may not show the actual color of the item. If item is defective after 3 months, you can still send it back to us.