Tiles size (in cms) 28 x 28, 56 x 28, 56 x 42, 56 x 56, 56 x 84, 30 x 30, 30 x 60, 60 x 40, 40 x 40, 60 x 60, 60 x 90. Thickness 15mm to 50mm with a tolerance of ¦5mm 18mm to 22mm with a tolerance of ¦2mm (for both side swan) 19mm to 21mm with a tolerance of ¦1mm (back sides calibrated) We can supply customize slabs also.