Made from high-quality ABS plastic and non-slip EVA padding, Installs easily on any stair railing type such assquare posts, round pillars, and irregular shapes, tool-free setup that requires no drilling, this adapter is built for long-term use. Features: Ideal for baby gates, pet gates, and other safety barriers This multi-hole design simplifies installation and eliminates concerns about finding a suitable mounting point for your door rail Please measure your banister dimensions carefully before ordering to ensure the adapters are compatible Installs easily on any stair railing type—square posts, round pillars, and irregular shapes—without drilling Installation requires only a screwdriver, features a simple, tool-free setup that requires no drilling Fits round or square stair posts with a diameter range of approximately 50-100mm (about 2-4 inches) Specification: Material: ABS plastic, non-slip EVA padding Color: White Size: As shown Package Weight: About 1.04 KG/2.21 LB Tips: Please allow 1-2 CM/0.39-0.78IN or 0.01-0.03 KG/0.02-0.06LB differs due to manual measurement. Please allow slight color difference due to different monitor. Package 1 X Baby Gate Banister Adapter Set We have a strong guarantee, we will provide the best service for you.