granite kerbstone 1.Strong hardness 2.Factory directly 3.Good price & on time delivery Paving StonePhysical PropertiesA. Density(g/cm3): 2.65B. Water Absorption (%):0.33C. Strength to bending (MPa): 156.60D. Porosity hardness modules of elasticity (MPa):15.00 Size for Reference:7 x 7 x 7 cm8 x 8 x 8 cm9 x 9 x 9 cm10 x 10 x 5 cm10 x 10 x 10 cm Available Color: Grey, black, red, yellow, dark, ...