Every sculptor has an arsenal of sculpting tools. Some are used once and deemed not very useful and others get used into the the ground. I have some great tools that use quite a lot and it shows. I have some that are constantly breaking or pulling apart at the ferrule. Yes, I can usually fix it by mixing a two-part epoxy and cemented it back together - but over time they break again.
One tool that has never had this problem is the Glyptic Sculpting Tool. I have the Glyptic E Handle which is for small and medium loops and do plan to buy a larger tool for my next sculpting project. What I like is that because the loop extends down into the aluminum handle it takes the pressure off the ferrule area, resulting in a strong tool. I can really dig with this baby and it doesn't give, bend or wiggle and trust me, in a cold Colorado studio, the clay can get pretty hard - bending and breaking tools is common.
You can also easily change out the tool's loop ends from small to medium, smooth and serrated. The set of loops that I have is medium serrated and comes with 7 loop ends and a small hex wrench.
Simply loosen the small hex bolt, slide out the loop, choose a new loop to insert and re-tighten the hex bolt and you're ready to sculpt with a new size or shape of loop tool.
I got mine about 5-7 years ago from SculptureDepot.net and it is still in as good of a shape has when I got it. When you compare that to the tools that I have epoxied back together, that's saying something.
Hopefully I'll get video and editing figured out better so I can splice in video of the tools being used...