Secure Your Cylinders, Protect Your Regulators, and Stay Compliant. The GT-11 Fine Thread Safety Cap is the professional standard for high-pressure gas cylinder protection. Unlike traditional screw-on caps that require you to dismantle your entire rig just to move a tank, the GT-11 is designed for the modern welder and industrial pro who values both safety and efficiency. Why Upgrade to the GT-11 Style Cap? 1. The "Regulator-On" Advantage Stop wasting time unscrewing your regulator every time you need to move a tank or close up shop. The clamshell design allows the regulator to remain attached to the valve even when the cap is closed and locked. This feature alone saves countless hours over the life of the product. 2. Fortress-Level Security Gas regulators are expensive, and unauthorized gas usage adds up. This cap features a dedicated locking hasp. By swapping the standard pin for a padlock, you instantly convert this safety device into a security vault—preventing theft of your regulator and stopping untrained personnel from opening the valve. 3. Total Compliance Job site safety inspectors don't cut corners, and neither should you. This cap is engineered to satisfy DOT, OSHA, and MSHA regulations for cylinder valve protection, ensuring you avoid fines and keep your workplace safe. Technical Specifications: Model: GT-11 Style (Fine Thread) Thread Specification: 3-1/8” Diameter x 11 TPI (Threads Per Inch) Material: Welded Steel Finish: Powder Coated Safety Yellow Compatibility: Oxygen, Argon, Nitrogen, Helium, CO2 (High Pressure Cylinders with Fine Threads) Compatibility Check: Please measure your cylinder neck ring before ordering. YES: Fits 3-1/8" neck with 11 threads per inch (Fine Thread). NO: Neck rings with 7 threads per inch (Coarse Thread). Invest in the safety of your team and the longevity of your equipment with the GT-11 Safety Cap.