【polystyrene corner protector】Excellent corner protection for fragile items.
【Measures 3X3X3"】Wall thickness 0.8".
【Material: white EPS】Density 19 kgs/cubic metre.
【Recommend 2" Corner and Knock Down Corners】15582 15583
【Instruction Video】To help you better understand this product please view this video: https://youtu.be/TFh2fyeqCTE. You can also search "15581 Styrofoam corner protection packaging box shipping fixturedisplays" on youtube to locate the video