Premium Transparent Design: High-quality PVC offers a crystal-clear finish to showcase your water-cooling loop. Smooth Inner Walls: Prevents bacterial adhesion for clean, efficient coolant flow. Generous Length: 3 meters of tubing provides ample length for customization. Perfect Dimensions: Inner diameter of 3/8" (10mm) and outer diameter of 5/8" (16mm) ensures compatibility with various fittings.