Tiles size (in cms) 30 x 30, 60 x 30, 60 x 40, 60 x 60, 60 x 90, 28 x 28, 56 x 28, 56 x 56, 56 x 84, 40 x 40, 20 x 40, 20 x 20. Thickness 15mm to 50mm with a tolerance of ¦5mm 19mm to 21mm with a tolerance of ¦1mm (back sides calibrated) We can supply customize slabs also.