Flex-Loc® Modular TIG Torches By CK Worldwide Use A Modular Torch Body Design With Interchangeable Heads For Increased Application Versatility. FlexLoc torches can be configured for nearly any job by choosing from the parts listed in the product category icons, or view the parts individually from the "3" series parts listed below.
The CK-FL150 comes with the "3" Series head (compatible with 17, 18, 26, CS300, & CS310 Parts).
Need help figuring out which front end parts you need for your torch? Check out Arc-Zone.com's Informative Exploded Parts View Here: 3 Series Accessories (.pdf).