Nauticam or ULCS arms in Lights, Strobes, and Lighting Technique Posted January 13, 2015 · Edited January 13, 2015 by diveski01 Since I can't seem to find an online retailer for the Inon 5" arm with YS mount (YS Arm MS) and I will be using an INON wet lens caddy, I will be forced into a mix-n-match system between Nauticam and INON. I've read some reviewsw/o naming any names that don't like housing brand arms and clamps so maybe I also will throw ULCS into the mix too? I would then only have the two Nauticam base balls to deal with wear and tear concerns, if any. At least all three use same diameter whereas mixing S&S OLD arms and clamps with new Nauticam base balls is a bit wobbly as the S&S balls aren't 1" diameter. Thanks all for your input - it's been very helpful!