[8 Risers per Set]Suitable for elevating desks, dining tables, beds, appliance such as humidifiers washer driers, cribs, chairs, sosfa, and other furniture to increase storage space, reduce hard-to-reach areas for cleaning, and facilitate maintenance. A set includes 8 risers, with 4 large-sized 6.26 x 6.26 x 5.71 inches risers and 4 small-sized 4.76 x 4.76 x 3.86 inches risers. The recess area measures 2.8 x 2.8 x 0.71 inches. The total weight is 3.75 pounds [Use for 3, 5, or 8 Inches Heights]Three height options are available. The small risers provide a 3-inch increase, the large risers provide a 5-inch increase, and when stacked together, they can provide an 8-inch increase. If you use the risders on its flat edge vs the recessed platform, you gain 0.7" in height [Max 2.8 X 2.8" Leg Size]The inner dims of slot measures 2.8 x 2.8 x 0.71 inches. Thus your furnure leg should not exeed 2.8" to use the small risers [Tips for Leg Reinforcement]If your furniture legs are on thin side, consider use spray foam to fill the gap, or cut out a sqaure piece of wood with a center hole - not required but nice to do. [Made of heavy-duty plastic]Capable of supporting the weight of most of your home or office furniture, max 1000 pounds [Use as Small Planters]These risers when flipped over wide side facing up, makes excellent planters (no drain hole) for succulents and plant of seedlings [Product Video]Video Instructions link: https://youtu.be/dJcuqCINxtw. You can also search "15801 set of 8 furniture riser feet leg support 3 5 inches fixturedisplays" on youtube to locate the video. You can also download video by following this link: https://www.fixturedisplays.com/video/15801.AVI Non-continental customers, please contact us for additional freight to your area.