It looks like the T4857 product is thermoplastic made in Taiwan. I also have a ceramic set like Tisha which was also recommended by K7QO.
But I recently bought a vintage radio and had to buy yet another set, because none of my other tools would fit the
2mm hex cores in a vintage SX-190 that I am restoring. The Hozan D-16 is made from Delrin, but I have no idea if
that's a step up from thermoplastic.
I haven't cracked any cores yet, knock on wood...
73 de Russ, va3rr
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On Sun, Sep 3, 2023 at 11:09 AM, Tisha Hayes, AA4HA wrote:
Be careful, ceramic is very fragile and you can't do anything more than
trimming adjustments, never use it as a conventional screwdriver. But it beats
the pants off of those plastic tools or the ones with the tiny metal tips.