SIZE: The diameter of the small hole is 15 mm, the diameter of the large hole is 18 mm. It can be easily stretched during use, suitable for round and flat door handles. SAFE MATERIAL: Our doormats are made of high-quality PVC material, non-toxic, odorless, and slightly elastic, and suitable for most door handles. APPLICATIONS: Our doormats are made of high-quality PVC material, non-toxic and odorless, slightly elastic, and suitable for most door handles. Our doorstop can be attached to door handles such as kitchen or bathroom handles, an ideal solution to prevent damage to walls and furniture. CONVENIENT TO USE: No tools required, no drilling or gluing, just attach it to the door handle and use. INVISIBLE DESIGN: The transparent color makes this small spike on the door handle almost invisible, silently protecting you and your family.