Description: 【Versatile Compatibility】: Designed to fit most doors, this Gate Banister Adapter kit is suitable for cylindrical or square posts ranging from 50-100mm in diameter. It can be adjusted to accommodate a wide range of pressure mounted gates, making it ideal for gate railings in various locations 【Material】: Stair Post Fitting Kit is crafted from quality pp, these bases ensure long term durability and reliability, providing a secure installation for your safety gates 【Ideal for Pet Safety Gates】: Gate Railing Adapters for replacing hardware parts in indoor safety door guardrail used for pet such as dogs and cats, ensuring their safety while maintaining easy access 【Compact Size】: Each stair mounting fitting base measures 12.1cmx17cm/4.76inchx6.69inch , offering a compact yet sturdy solution that seamlessly integrates with your existing setup without taking up unnecessary space 【Package】: The package includes two Gate Banister Adapter Bases ,make you effectively install or replace the mounting hardware on your gates Specification: Material: Plastic Size Chart: 12.1cmx17cm/4.76inchx6.69inch  Package Includes: 2pcs Gate Banister Adapter Set Note: 1.This is not infant toy , please take away from children to avoid eating. 2.Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.