Alright welders, listen up - this is important stuff right here. These SÜA welding tips are made specifically for Victor \J\ Series light duty torch handles ONLY. I'm gonna say that again - they WILL NOT fit Victor Series \100\ or \300\ handles, so double-check what you've got before ordering. These are general purpose welding and brazing tips that work with oxygen/acetylene and oxygen/hydrogen setups. They're manufactured from high-quality copper and brass, so you're getting solid performance without paying the premium brand price. The #3 size is perfect for various light welding jobs - but definitely check the tip chart picture in the listing for all the specific sizing details, welding capacities, and operational parameters. Just to be super clear - this isn't made by Victor, it's a compatible replacement that meets high quality standards. The threading is specifically designed for J series handles, so if you've got one of those light duty Victor torches, this should slot right in perfectly. They're great for everything from basic welding to brazing work, and having spare tips on hand means less downtime when you're in the middle of a project. Seriously though - measure twice, order once, because these won't work with other Victor series handles!