The most common size hand torch that these kits fit is the WP17, WP18 & WP26.
The smaller kits contains the patented EDGE Gas Lens 1718 adapter with a double o-ring seal and 2 of the same size Glass Cups.
The 6 Piece kit contains the patented EDGE Gas Lens 1718 adapter with a double o-ring seal and a set of 6 Glass Cups (1 of each size).
Every item has been manufactured by leading brand, EDGE, and uses scientifically approved material. Not only does this ensure durability but gives peace of mind when working at commercial welding's high-temperature levels. The risk of melting or cracking has been eliminated through careful research. These are quality items, manufactured in America, and not cheap imitations, as listed by some other sellers.