Solid stainless steel, not chrome. 
 
And I think I want it anodized. 
 
And:  oops, wrong pic, meant this: 
 
 
 
...and technically, I haven't bought it yet. 
 
And no, it's not a rectal thermometer, it's for my tea. 
 
And yes, I had to look up what a "tamper" is, and yes, I did giggle when I looked at this gallery (of buttplugs).