I have two of the older ones. The original one that my dad bought right after they came out was so soft that it came apart in the 90's just sitting in the closet. The newer one looks like an old bleeder yellow dot with very little pearl look to it and is harder than the original but softer than the yellow dot. I can put a nail print in it easily and if you press really hard and for a good 30 seconds it will leave a finger imprint. My uncle has one like in the picture and it is much harder more like a newer yellow dot.
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ROTO GRIP - King of Them All