Slide these 100% rubber flooring mats under any weight bench, power rack , or Smith machine. They can protect your flooring and provide a much safer surface for working out. They can also enhance your home gym's appearance and make it much easier to maintain over time. We recommend using six to eight mats for weight benches , 12 to 16 mats for power racks, and 16 to 20 mats for Smith machines. The tiles are 0.31-inch thick and allow you to create a protective barrier between your flooring and equipment.