Are you sure you're not looking at the ones in the "You may also like..." box? The ones I linked to are 8mm.
The pin diameter is 2.5mm though.
Subaru Brat - Sand Scorcher - Rising Storm - Wild Willy II - 1967 Beetle - F350 High Lift - Stampede - Rustler - XXX-SCT - Micro Baja - XX-CR - SC10RS - B4.1FT - S1
Drive what you want. Bash when you can, race to win , but do it all while having fun.