High Quality Material - These Shims Made From Heavy Duty Abs Plastics, Solid and Well Made, Sturdy and Durable, Rigid Enough to Not Compress or Deform Under Significant Load or When Driving Into Gaps As A Wedge. Excellently Anti-Slip Design - Both Sides for These Plastic Shims Comes with Special Ribbed Design, Perfect for Balancing Any Piece of Leveling Furniture On Uneven Floors, Easy Installation, Just Requires You to Slightly Lift The Product Up and Slide It Straight In. Stackable for Wide Use - Every Table Shim Size Is 2 X 1.18 Inch, The Maximum Height Is 0.2Inch and The Minimum Height Is 0.08Inch, But You Can Stack Them Readily to Create More Lift As You Want, Tiny Teeth In Their Highest Side Hold Them together When They Are Stacked. Multi-Purpose - These Plastic Shims Designed for Stabilize and Level An Uneven toilet or Furniture, Level The Bookcases In Your office, Keep Your Kitchen Table No More Wobble, Perfect for Balancing Any Piece of Furniture That May Be Tilting, Such As Doors, Windows, Table, Sofa, Etc. Worry-Free Shopping - Please Do Not Hesitate to Contact Us If Any Issues with Our toilet Shims, You Can Return The Product and Get A Refund within 30 Days From Receiving. Just Remember That Your Satisfaction Is Our First Priority.