4mm SPC Rigid Flooring, the Durability and Style Blend Featuring a sturdy Stone Plastic Composite (SPC) core, this flooring is incredibly durable and stable to ensure it performs well over time. Its mostly due to its 4mm thickness.Internal composite core is the reason for a sturdy waterproofing and scratch resistance floor, ideal also for commercial longer use. With a believable, natural wood or stone finish this lends itself to any design aesthetic. The floor comes with a click-lock system, which makes it easy for DIYers. Experience the Power and Style of SPC Rigid Flooring in your home.