The wall cup savers protect the walls when you mount the baby gates, they are hold the gates more stable. Using these innovations, you can no more worry that gates will budge when your lovely dog hit it or the toddlers shake it. Safety baby wall protection saver for wall surface baby gates wall cups, Fit for bottom of gates, doorway, stairs, baseboard, No safety hazard bottom spindles, child kid pressure mounted gates guard replacement parts please make sure you have purchased pressure gates for the wall cup, and check doorway or baseboard can fit the wall cup. (wall cups size: 2.35x2.35 inches)