402540 40 means the thickness is 4mm; 25 means the width is 25mm; 40 means the height is 40mm;
501012 50 means the thickness is 5mm; 10 means the width is 10mm; 12 means the height is 12mm;
852530 85 means the thickness is 25mm; 25 means the width is 25mm; 30 means the height is 30mm.