Adjustable, stackable design: individual spacers stack easily to build the exact height you need. Fill small or large gaps, eliminate wobble, and finetune alignment without trimming or permanent modifications. Durable rubber construction: made from strong, flexible rubber that supports substantial weight while resisting warping or breakdown over time. Keeps its shape under load for reliable, longterm use. Tool installation: simply slide the spacer(s) under table or chair legs, cabinet corners, or door panels. No tools, fasteners, or adhesives required — install or reposition in seconds. Broad compatibility: works with a wide range of furniture and fixtures, including tables, chairs, cabinets, doors, and panels. Designed for use on common floors such as wood, tile, and carpet. Practical performance: height with stacked layers, maintain level surfaces, and correct misaligned doors or panels. The flexible material conforms slightly for a secure fit without damaging flooring. Use scenarios Dining room: stack spacers under one table leg to stop wobble on uneven tile or hardwood floors so meals stay steady and glasses don't tip. Office: level a desk or conference table on carpeted flooring to provide a stable work surface and prevent rocking during use. Cabinet and door adjustment: insert spacers behind cabinet panels or under door thresholds to correct alignment and ensure doors close evenly. What you get A set of stackable rubber spacers that are compact, reusable, and simple to use for quick furniture leveling and door or panel adjustments on wood, tile, and carpet surfaces.