Are you looking for a solution to secure the face shield of your Ennui Clash Derby helmet? Look no further. The fixation pins are very easy to attach to the helmet and prevent the helmet from being flipped up during a bout. To do this, simply loosen the two plastic screws on the visor. Replace the original pins and screw everything back together. The pins are marked with L for left and R for right, so you can't go wrong!