ok so ive just dug out an old frame i want to sell and i need to get the cranks off it the cranks are similar to these
ive only got the thick allen key and the parktool crank remover, when i take the top caps off both sides of my crank arms i see a square underneath with a small hole looks like i need to screw something into it? i think my tools wont do the job for that, what tool do i need thx

