Door stop retainer designed for easy installation and reliable holding performance. The doubledrum lock mechanism makes installation quick and operation straightforward, so you can secure a door stop without tools or complicated adjustments. Key benefits Easy to install and use: doubledrum lock design allows fast attachment and removal while maintaining a secure hold. Durable materials: ball buckle components are made from coldrolled steel and zinc alloy for strength and wear resistance. Precise fit: internal space in the natural state measures 13 mm (0.51 inch) and internal diameter measures 17.5 mm (0.68 inch), ensuring compatibility with matching door stop shafts. Function and compatibility Function: holds a door stop in place to prevent inadvertent movement and to keep doors secured at the desired position. Compatibility: suited for door stop shafts that match the specified internal space and diameter. Check measurements before to confirm fit. Practical applications Home interior doors: keep door stops engaged to protect walls and control door position in living rooms, bedrooms, and hallways. Mobile applications: secure door stops in RVs, trailers, and campers where vibration and motion can dislodge standard retainers. Commercial and utility use: retainers for maintenance closets, storage rooms, and doors that require a reliable stop mechanism. What sets it apart Simple, tool installation and operation reduce installation time. Solid construction from coldrolled steel and zinc alloy provides durability for repeated use. Clear sizing information enables a confident fit for compatible door stop shafts. Package note Item: Door stop retainer. Verify that your door stop shaft corresponds to 13 mm internal space and 17.5 mm internal diameter for proper fit and function.