The product is a pack of 12 white square post caps designed to fit 4.5x4.5 and 5x5 wood or vinyl posts. Made of premium matte-finished ABS, these post caps are water-resistant, weather-resistant, and rust-resistant. With dimensions of 5 inches in length and depth, and weighing 1.94 pounds each, they are a durable and practical option for garden fencing and outdoor spaces. The SIEDiNLAR brand ensures quality and reliability for your fencing needs.