Bear
SILVER Star
Seeing different versions of the STO yellow jacks pop-up on Ebay, it's easy to see how they can be confusing with different weight ratings. Since they look similar on the exterior, what's the differences on the inside that makes them able to support more weight? Is it the number or size of the ball bearings? Different compostion of the materials? A thicker case?
Thanks in advance.
Thanks in advance.