Most likely the steelseries glides are around 0.4-0.5mm thick. If you remove the original feet, then you will need to stack 2 on each corner, if you keep the original feet then you only need 1 on each corner.
Yh but i think it's too small, i.e. it won't last long? idk, i'm going to try 2 on each corner i think.
EDIT: Two on each was too much of a glide so i'm using one.