Adjustable Vinyl Fence Post Leveling Collars Our post levelling collars are the best post-to-pipe pole leveling accessory on the market, allowing you to install your steel posts without using concrete. The post levelling collars have a round exterior with oblong “donut hole” centering hole. Also known as a post socket, adapter or collar, the post collars will assist in building a straighter fence in less time. Your customers will be pleased with a clean, damage-free installation–without the need of a skidsteer, auger or concrete mixer. You will save money on vinyl because the PVC post length stays above grade—a six-foot fence requires only a six-foot post. The post leveling collars also allow you to make quick adjustments in the rare occurrence of post shifting, reducing warranty issues. Our post collars have been proven in some of the harshest climates and most difficult soil conditions in the world. 1-Kit Includes Post collars, fits 2-3/8” pipe to st…