Straight off the top of my head, they are different – the ML is only about 4 1/2″ across the full width of the bed, and IIRC the front shear is 1 and (something like) 17/64 (~44mm), and the back one is 1 3/8..
If you don’t get definitive confirmation by the time I finish work I’ll go and measure up for you..
..they are 1/2 deep though..