Sterling Silver Round Jump Rings, Outer Diameter 4mm, 0.025", 22 ~ Gauge Wire, , Sold per pkg of 10

In the past I have purchased jump rings from Thunderbird and been pleased with their products. However, these jump rings were undersized. The rings should have an OD of 4mm but were consistently ~3.75mm in diameter. This may not seem like much, but it is a lot of lost material that you are still paying for and has a visible difference in size and the number of rings needed for a piece. It is also a false advertisement of the product since no dimension measures 4mm, even though the title and the specifications tab quote otherwise.

This is particularly bad given their 6mm sterling jump rings were also 0.25mm undersized. The small size of these jump rings means that that same 0.25mm difference is a far greater reduction in the amount of silver than the larger rings.