1" Wonder level self-leveling table glides. The glide has a self-leveling spring mechanism that adjusts when furniture is moved on the floor. Ideal for uneven floor surfaces that cause wobbly tables. Install by screwing in the 1/4" threaded stem to existing thread hole or follow instructions to drill holes and install the provided socket. T-nuts can be used for wood legs. After installation with hex tool, apply either the Felt Gard pads for wood floors or the Slide Guide for carpeted or ceramic floors. 4 per card.