Wider and Longer Upgrades for the Looker 02 Insert

Over on several men mentioned swapping to a wider diameter insert for their Looker 02, noting it makes peeing easier and boosts stimulation. They also opted for an insert that is slightly longer. Thumper agrees he would choose the same upgrade if starting fresh.

I am considering this because I like the L02 insert concept: The standard Looker 02 has a 6mm (18fr) tube with an 8mm (24fr) bulb at the tip. The advice is to go for an 8mm tube paired with a 10mm (30fr) bulb. Apparently, this is the only other size option Steelworxx offers, though they might be able to make a 9mm (roughly 28fr) bulb as well.

I enjoy urethra play and can handle a 24fr metal sound without issue. A 28fr sound isn’t too difficult either, but 30fr is near my limit. My question: Can the urethra accommodate a 30fr bulb more easily than it does a solid 30fr sound? Has anyone upgraded to this insert size on their Steelworxx cages?