you can't really tell anything by those pics...looks like maybe Titanium retainers....
if i was you i would pull the head, check for the sleeves, etc, etc.....to make sure the guy didnt fuck you.
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RIP Kevin Gonzales AKA Slo_Si 9/06
RIP Robert Kolp aka 00ek 4/07
RIP Pablo Garcia aka FatHead 9/07
_Jake D