The Bykski G 1/4in. Female 3-Way T Adapter Block allows you to split or combine your loop at a 90 degree angle. This adapter is also a great way to create an inline fill or drain access point. Specifications Thread:G 1/4in. Dimensions:23.9mm x 23.9mm x 23.9mm Material: Coated Brass Compatibility Loop:Non-Aluminum Included Parts 1x G 1/4in. Female 3-Way T Adapter Block Warnings Due to internal finish this part may not be compatible with DI water based coolants and is NOT compatible with PrimoChill Opaque and VUE Coolant Series! Not responsible for any damage caused by or when using this product. Use at your own risk.