We provide rubber floor tiles that interlock, designed exclusively for the home gym flooring industry. The black recycled rubber tiles with 10% grey specks provide the illusion of an expensive gym floor. The rubber tiles, which are 8 mm thick and measure 5/16 of an inch, protect the flooring from vibrations induced by exercise equipment such as treadmills. https://modutile.com/product/interlocking-rubber-floor-tiles-23x23-8mm/