m200 slot: LP LP-E12 Battery Charger Pack, 2-Pack Battery & Dual Slot Charger Compatible with Canon EOS M200, M100, M50, M50 Mark ii, M10, M2, M, Rebel SL1,DIN 981 Slotted Round Lock Nut. Slotted Round Lock Nuts, also named Round lock nut, Slotted Round nuts, Shaft lock nuts, made of steel, M10-M200 from China lock nuts manufacturer.