4-Pack Professional Replacement Set: 4.5 Glass Downstems & 14mm Matching Bowls? Keep your glass setup clean and ready for action with our premium 4-pack replacement kit. Designed as a universal-fit upgrade, this bundle ensures you always have a fresh, crystal-clear downstem and bowl set on hand, maximizing flavor profile and airflow performance. ? Why Choose Our Replacement Kit? Precision Craftsmanship? Every 4.5-inch downstem and 14mm male bowl is handcrafted from high-purity borosilicate glass. The result is a crystal-clear, heat-resistant, and high-durability piece that maintains integrity even under high-frequency usage. Optimized Airflow Design? Our downstems feature precision-cut diffuser slits at the base, engineered to break down smoke into smaller bubbles. This ensures a significantly smoother, cooler, and more enjoyable experience compared to stock accessories. Universal Compatibility? With a standard 18mm top joint tapering to a 14mm bowl fitment, this set is compatible with the vast majority of standard water pipes and bongs on the market. It is the ultimate “fix-all” for any glass collection. This 4-pack value bundle offers unmatched convenience. Keep your main piece clean, have backups ready for friends, or replace older, stained components instantly to keep your setup looking brand new. Downstem Length: 4.5 Inches. Joint Size: 18mm Ground Glass Joint (Top). Bowl Size: 14mm Male Ground Glass Joint. Material: Premium Heat-Resistant Borosilicate Glass. ? What’s in the Box? 4 × 4.5-Inch Performance Glass Downstems. 4 × 14mm Matching Round Male Bowls. 1 × Reinforced Protective Gift/Storage Box. We understand the fragile nature of glass. Each set is individually inspected and housed in a custom-molded, shock-absorbing foam tray within a heavy-duty gift box. We guarantee your order will arrive in pristine, showroom condition-if not, we’ll replace it immediately at no cost. ? Pro Tip for Maintenance: For the best results, soak your glass in a mix of 90%+ isopropyl alcohol and coarse salt to dissolve residue easily, keeping that glass as clear as the day you unboxed it.