This is a replacement for the push-in fitting used on SPA firing heads. The 1/4 NPT male threads fit all SPA firing heads (electrical or mechanical). The other end accepts 8mm (5/16") Dekabon Tubing (Part No. 2456-.312). It will not work properly with bare aluminum tubing. Sold individually.
Note: The SPA fire systems we stock use 6mm (1/4") tubing, not 8mm. We stock the SPA 1/4 x 6mm (1/4") Push-In Fitting for Firing Heads (Part No. SP 022) for the systems we sell.