Cant get these end caps out😫

[Beanboyrides]

I have recently bought a new nukeproof neutron v2 rear wheel. I bought end cap adapters as my bike is qr 135mm. I can get the non drive side end cap off but i cant get the drive side one off for the life if me. I have tried wrench pliers but it has not worked as i can get enough grip without damaging the part. what do i do? Accordimg to nukeproof it is supposed to be an easy pull off process.

 

[Cycleops]

Perhaps try tapping them gently from behind with a wooden drift and hammer?
if that doesn’t work I should refer to Nukeproof.

After looking at the end caps I can see this wouldn't work. Use some mole grips and wiggle the cap side to side.

 

[fossyant]

Pics of the end cap. Some drive side ones have two flats for a cone spanner.

 

[fossyant]

Cloth and a needle nose plier, and give them strong pull