This is a self sealing stem bolt.

[shortylickens]

It can be traded for yamuk sauce.

 

[sdifox]

Look like it belongs in Dr. Who police box.

 

[Ken g6]

You bought a prop? How much latinum did you pay for it?

 

[K1052]

I'll give you seven tessipates of land for them.

 

[snoopy7548]

You're a self-sealing stem bolt.

 

[Scarpozzi]