I have a set fitted to my Uberti '58 Remington right now. They work great with no problems & yes they do take #11 CCI caps just about perfectly. They aren't shiny chrome type S/S BTW, more of a light grey that goes well with blue finished cylinders. These have had a little breaking in & have darkened a tad more.
I'm a little confused by the "hex headed version
" reference though, mine have the old standard "2-flats" type or wrench fitting. There is very little room in the nipple recesses of the '58 Remmy cylinder design, so any socket type wrench would have to be pretty thin-walled to fit. Almost a box wrench!
Allan Quartermain: “Automatic rifles. Who in God's name has automatic rifles”?
Elderly Hunter: “That's dashed unsporting. Probably Belgium.”