Size:
Square: about 154x154x9mm; inner size: about 150x150mm, hole:5.5mm;
Square: about 204x204x9mm; inner size: about 200x200mm, hole:5.5mm;
Square: about 254x254x9mm; inner size: about 250x250mm, hole:5.5mm;
Total: 3pcs/set.