✔️ Easy DIY Installation: simple post cover plate, typically used to cover core holes up to 80mm Dia✔️ Beautiful Design: These post baseplate covers are designed to cover baseplates and the fixings leaving Modern lines and a crisp Black finish.✔️ Light & Strong: Crafted from Heavy-Duty Aluminum and Powder-Coated for Durability, Our PoolSafe Black Post Covers come with a 10-year powder coating warranty and a 12-month product warranty for the ultimate peace of mind. This Premium Barr Post Cover Plate is crafted from High-Quality Aluminum and powder-coated to withstand the harsh Australian sun and designed not to rust. DIMENSIONS:Outer: 100 x 80mm OuterInner: 52 x 27mm Inner Barr Posts = Recommended 63mm or 76mm core drill sizes.