The BLEEDER TEE Assembly (HF-5519) from SeaStar Solutions is reliable, durable, and high-quality. This product does not harm the boat engine but only assists in the smooth and safe operations of the boat. This product from SeaStar Solutions is a 3/8 inch compression fitting that utilizes 9/16 inch to 24 extra fine threads. This product comes in 2 pieces per pack. Since the material is brass, it is high-quality and serves a long time without much replacing and maintenance. The exterior is polished giving it a striking look that adds up to the good features of the boat. Key Features: Strong, reliable, and high-quality material Constructed for quick and simple use Improves boat engine performance 3/8 inch compression fittings Product replaces: 731957802620 HF5519 1-HF5519 Product Specifications: Brand: SeaStar Solutions Category: Teleflex Hydraulic Fittings and Parts SKU: HF-5519 UPC: 731957802620 Weight:0.96 LBS Manufacturer Part Number (MPN): HF5519 Material: Brass Type: Bleed Tee (TMCylinders) 2 per pack Exterior: Polished For use with SeaStar Steering Hydraulic Systems. 9/16"-24 thread. Comes 2 per pack.