🔹Solid, one-piece cast body—sturdy, durable, and resistant to deformation.
🔹Self-locking steel ball valve ensures smooth pumping and prevents adhesive backflow.
🔹High-elasticity rubber expands evenly to grip the hole walls tightly, preventing leaks.
🔹Precision-engineered, wear-resistant threads remain smooth even after repeated tightening.
🔹Pre-scored break point allows the excess stem to snap off cleanly with a light hammer tap.