https://all4bikes.be/shop/images/shimano/P_THV032435.jpg
Tool to loosen the pedal cone safety nut.
For PD-7410, -6620. -6610, -6601, -6600, -6500, -R600, -5610, -6500, -5500, -R540, -R535, -M858, -M747, -M536, -M520, -M515, -M545, M434, -M424, -A530, -A252, -A520, -A515.