Durable construction: ABS body with a strong adhesive for stable, long lasting performance. Easy to install and requires no tools. Pasteon design: Adhesive backed so the mini caster wheels can be stuck to the bottom of boxes, crates, chests, or lightweight carts with minimal effort. Silent rolling: Smooth, quiet motion that reduces floor noise and won't scratch or mark surfaces. Versatile and compatible: Mini size designed for lightweight items. Suitable for trailers, trucks, removable dog crates, and other small, lowprofile applications. Use scenarios: Attach to a small storage box or pet crate to move it around the garage or home without lifting. Convert a toolbox or light cart into a mobile unit for easier repositioning in a workshop. Add to a lightweight travel crate or trailer interior to shuttle items during loading and unloading.