FireRock 55T17518S30SOY 18" x 30" x 1-3/4" Oyster Square Edge Smooth Coping - Coping provides a smooth surface and acts as a great finishing accent. It covers the pool's concrete edges and prevents water from getting behind the pool shell and walls. The finish is perfect for outdoor pools leaving a softer look and feel around your pool. Available in a wide array of colors, sizes, and thicknesses, FireRock’s line of architectural-grade concrete coping adds timeless elegance that matches any vision.