Specifications: The bulkhead fitting adapter is suitable for sealing the openings of water towers, water tanks, external pipes, valves, and faucets. It includes a clear silicone seal gasket for enhanced sealing performance. Made of high-quality PVC, this fitting adapter is durable and resistant to fading. Item Name: Bulkhead Fitting Adapter Material: PVC Quantity: 2 Pieces Features: 3/4 Inch, includes seal gasket, durable Size Details: - Inner Hole: DN20 (3/4") - Inner Hole Size: 24.3mm / 0.96" (Approx.) - External Thread Diameter: 37.8mm / 1.49" (Approx.) - External Thread Depth: 38.5mm / 1.52" (Approx.) - Total Height of Interface: 47mm / 1.85" (Approx.) - Cap Thickness: 11mm / 0.43" (Approx.) - Silicone Ring Thickness: 3.5mm / 0.14" (Approx.) Notes: Due to differences in lighting and screen settings, the item color may vary slightly from the images. Slight dimensional variations may occur due to manual measurement. Package Includes: 2 x Bulkhead Fitting Adapter (Plug Not Included)