Durable mini casters with ABS construction and a strong adhesive bond for reliable, longlasting performance. Tool installation. Adhesivebacked design: sticks to the bottom of small boxes, crates, or toy models for quick, clean attachment without tools. Quiet and surfacefriendly: smooth rolling action that minimizes noise and won't scratch or leave marks on surfaces. Interactive toy accessory: supports parentchild play by enabling kids and adults to build movable playsets such as trailers, trucks, removable crates, and more. Compact and compatible: mini size fits flatbottom surfaces on a wide range of small items; suitable for crafts and DIY projects. Practical uses: Turn a shoebox or small box into a rolling toy by attaching these wheels. Add mobility to small wooden or plastic crates, toy boxes, or project boxes. Enhance school dioramas or model kits with movable wheels for realistic detail.