Step down to 25G and a cog thread handles differently; the Ultra+ listing carries that gauge in its 25G/60/185 specification. A finer gauge means a smaller entry point, which is generally the reason a practitioner reaches for it in preference to the heavier members of the same family.
The contrast inside the range is easy to read. Rainbow Thread Cog 6D 19G/100L/170 is six gauge numbers heavier and built on a different configuration, so clinics that carry both treat them as complementary stock rather than as substitutes for one another.
Both appear in the Oren Life Science section of the catalogue. Stock is sealed in manufacturer packaging, priced at wholesale for clinic accounts, and shipped worldwide to qualified practitioners ordering through a registered trade account.




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