So I have 4 of the X-Metal Soft vaults that came in the box with my X-squared glasses.... I found one on eBay last week, figured I could use a spare, and got a good deal on it. It arrived today, and I noticed it's a bit shorter in length and a bit thinner than the ones that came with my X-squared. Did they change the size of these at some point? I'm thinking the one I just bought may be older... Just not sure. Any insight? I noticed on O-review that they list two SKU's (07-027 & 07-266), but do not mention anything about size.