Impossible to remove

I bought a similar pedal game wellgo mark (in gray). Easy to install, pleasant to use. But when I wanted to put off the Auto pedals instead, impossible. These pedals are not removed with a key standard pedal over all other brands. There is only one Allen key that can be placed in the center and unfortunately, that is the key to dismantling breaks or is destroyed no unscrewing. Result, it is extremely difficult to disassemble and I really thought destroy my pedals ... After much effort, I could dismantle and discard immediately.

I do recommend that if you do not dismount them!