A new, never-used item in sealed box Details: Don't drill into your banisters and ruin your woodwork! The Qdos Universal Stair Mounting Adapter prevents damage to your woodwork by eliminating the need to screw into your banister when installing baby gates on banisters or spindles. The Qdos Stair Mounting Adapter works with ALL brands of baby gates up to 34" tall, both Hardware Mount and Pressure Mount! It comes in White to complement most baby gates, and fits square banisters up to 4"x4" or round banisters up to 5" in diameter. * Fits square banisters up to a MAXIMUM of 4" x 4", or round banisters up to 5" in diameter. * Works with all brands of baby safety gates up to 34" tall, both hardware and pressure mount. * Each Qdos® Universal Stair Mounting Adapter is designed for one banister for situations where there is a banister on one side and a wall on the other. If you have banisters on both sides, you will need to purchase two Universal Stair Mounting Adapters.