sensitivity TIG torch switch assembly that delivers precise control, reliable electrical switching, and durable performance for argon TIG welding. Key benefits Precise control: sensitivity switch core gives fast, reliable response for fine control during TIG argon welding. Stable electrical performance: Integrated switching mechanism is engineered to provide consistent electrical performance with minimal signal delay, supporting stable current flow during welding. Durable construction: Built from longlasting materials to withstand frequent use in industrial environments and repetitive duty cycles. Improved safety and usability: Compact design reduces accidental triggers while allowing quick intentional activation even when wearing welding gloves. Offswitch function is integrated directly into the torch handle for streamlined operation. Easy fit and compatibility: Designed for use with 150 Torch models (WP17, WP9, 150A) and 300 Torch models (WP18, WP26, 300A). Compact form factor fits WP18 and other compatible torch handles. Features sensitivity core for responsive trigger action. Integrated switching mechanism to insure consistent electrical performance and minimal delay. Shell available in blue or yellow to match tooling or improve visibility. Robust materials chosen to resist wear from frequent industrial use. Antiaccidentaltrigger design while permitting quick activation with gloved hands. Builtin offswitch functionality integrated into the torch handle. Practical applications / use scenarios Precision TIG welding of thin stainless steel or aluminum where fine amperage control and fast trigger response are required. Production or shops performing repeated TIG welds where switch durability and consistent current switching reduce downtime and maintenance. Field or overhead TIG welding tasks where a compact switch, visible shell color, and glovefriendly activation improve safety and workflow. Compatibility summary 150 Torch: WP17, WP9, 150A 300 Torch: WP18, WP26, 300A What you get A compact, longlasting TIG torch switch assembly with a sensitivity core, integrated offswitch, and options for blue or yellow shells—designed to deliver reliable control, consistent electrical switching, and improved safety for argon TIG welding applications.