Tig Welding Back Caps 3 Size Set: Includes 15 pieces of back caps: 5 long (57Y02, 4.72x0.79in), 5 medium (57Y03, 2.36x0.59in), and 5 short (57Y04, 0.98x0.67in). Fits WP-17/18/26 welding torches for precise replacement needs. High Temperature Proof Material: Crafted from quality plastic and copper, these welding torch back caps withstand high pressure and heat, ensuring reliable performance during extended TIG welding operations without deformation. Secure Fit for WP Series Torches: Designed as direct replacements for WP-17, WP-18, and WP-26 torches, the back caps provide a tight seal and stable connection, preventing gas leaks and maintaining welding efficiency. Versatile Sizing for Comfort: Choose from long, medium, or short lengths to customize torch balance and hand placement. Ideal for welders seeking optimal control in tight spaces or overhead applications. Essential Welding Workshop Accessory: Perfect for professional welders, maintenance shops, and DIY enthusiasts. The durable construction ensures long service life, reducing downtime and replacement frequency.