The Price is for One Box One Box contains 9 pcs Interlocking tiles. Suitable for one Treadmill. Thickness Interlock Tiles 6 mm, 8 mm, 10 mm 12 mm Interlock Tile Size 500 mm x 500 mm Density 1,000 kg/m3 [62.34 lbs/cu.ft.] Resilience 49% Tensile Strength 1.39 N/mm2 DIN 183032 Tear Strength 9.7 N/mm ASTM D624 Shore Hardness A 60 ASTM D2240 Remaining Indentation 0.07 mm DIN 53960 Noise Absorption 18 dB [10 mm] EN 20140/ISO 140 Flammability Class Efl EN 13501-1 Class 1 ASTM D2859 Coefficient of Friction Dry 1.2; Wet . 1.2 ASTM D2047-97 Slip Resistance R10 ANZS 4596:1999 Thermal Stability -40ºC - 100ºC Neoflex Rubber Flooring is made of direction free rubber chips.