Package Information: you will get 8 pieces of vinyl post skirts, ideal for vinyl post hand and stair rails; Sufficient quantity will meet your using needs, and you can share them with your family Reliable Material: these post base covers are made of vinyl material, waterproof and sturdy, strong and durable, with smooth surface and fine workmanship, not easy to break or fade; Reliable material will serve you for a long time. For a more secure hold, we recommend applying a small amount of glue (not included) to the buckle (where the short post and round hole connect). Size Details: column wraps for porch have proper size, the inside diameter is approx. 4 inches/ 102 mm, outer diameter is approx. 5.79 inches/ 147 mm, height is approx. 1.43 inches/3.64 cm; Warmly Remind: this vinyl post skirt is created to fit externally on a true 4" x 4"vinyl post;This skirt will NOT fit a 4x4wood post as the true measurement of a 4x4wood post is 3 1/2"x 3 1/2";(Please measure carefully to ensure your post is a true 4inches by 4 inches before purchasing to ensure a proper fit) Widely Applicable: you can use these deck post bases on various occasions, they can match well with the surrounding decorations, add more details, to make decorations look more elegant and simple. Important Note: the post skirt is designed exclusively for smooth, flat-surfaced posts. It is not compatible with posts featuring lace, carvings, or any other decorative embellishments. Easy to Use: our vinyl post sleeve is easy and simple to use, there is no need to remove the railing and the ends can be easily clipped together to snug the column, not easily separated; You can wear gloves to protect your hands during installation, gloves are not included in the package; Installation tips: Align the round hole with the short post and press horizontally. You can use a rubber hammer (not included) to ensure there are no gaps in the diagonals after assembly.