Trade 110 mm Thomson Stem for 90 mm?

[CJM]

I have a 110mm 40 degree 31.8 clamp Dimension stem. The effective reach is about 60mm

You can have it for 5 bucks

I guess i'm not sure what mine has for an angle. I know it's a 31.8 clamp though and is 110 mm. Any tips? Just don't want to waste your time...