Outdoor Essentials Faux Rock, Grey, Key Realistic hollow imitation rock can cover objects or be used as a landscape accent Strong, weather-resistant and long-lasting fiberglass composite; no digging or stakes needed to install; 5-year limited warranty Interior opening measurements: 10" long at longest point; 8" wide at widest point; Highest interior point is 5" (height gradually tapers) Harmonizes well with landscaping; Hand-painted with a blend of tan and gray colors (more gray than tan); every rock is different, just like real rocks Material is easily drillable to allow access for wires or a hose