Help changing wheel

Tombusa

Sunday Drivers
Sorry Sorry Sorry

I have changed a wheel before....

I have taken the 4 silver locknuts of the STI but there is a fifth that the screw thing won't engage with a black nut - it's on all 4 wheels
Is it a security nut so skangers won't steel my wheels in the middle of the night

How do I get it off???

thanks

tom
 
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