Yeah,
The one CK Worldwide Safe Loc Dinse clamshell will not fit both 17 and 26 hose/cables, or their water-cooled equivalents. So CK has got you for over a $100 just for two connectors on a 17 and a 26 torch, if you have both, as I do. Everlast torch assemblies don't have that separation or added cost, even though the separation can have some advantages.
The SL8 will work for a 26 TIG torch and hose. The SL2 will work for a 9/17 TIG torch and hose. The 35 suffix designates the 1/2" Dinse (a 25 denotes 3/8"), which is what Everlast has on the 255EXT, and the QD designates the 9mm quick-disconnect which the Everlast also uses.
I don't notice a CK SL8 Safe Loc model that denotes the "QD", so I'd buy a barbed 9mm quick-disconnect fitting and some Oetiker clamps, which are a more elegant solution than how CK uses a compression fitting with a QD 9mm adapter on their SL2-35QD for the 9/17 torches. Everlast sells the 9mm fittings. I mean, that's what I did, even on a SL2-35QD I have, since I wanted to shorten the small gas line to the Safe Loc anyway.