Those are TIG Welding Torch Long Back Caps
What they are:
• Brand: GET STAR WELD
• Type: Long Back Cap
• Fits: WP-17 / WP-18 / WP-26 TIG torches - the most common air-cooled TIG torches
• Pack: 10PCS in a yellow zip bag
• Parts: Black body + brass threaded end + red O-ring seal
What they’re used for:
This screws onto the back of a TIG welding torch.
1. Holds the tungsten electrode - the long cap gives you space for long tungstens
2. Seals the torch - the O-ring stops argon gas from leaking out the back
3. Heat protection - keeps your hand away from the hot torch body