1.Both faces natural
Thickness 10-20mm
Dimension(cm) 30x15 30x30 40x40 20x40 30x60 60x60
2.One face natural & one face cialliberated
Thickness 10 or 15mm
Dimension(cm) 30x15 30x30 40x40 20x40 30x60 60x60
3.One face calliberated & one face honed
Thickness 10 or 15mm
Dimension(cm) 30x30 30x60 40x40 60x60 60x90