Wide application This quill spring is designed for drill presses and can also be used in other devices that require a coil spring, such as vacuum cleaners, volume tubes, and safety systems. Enhanced performance The spring is blackened, forming an oxide film on the surface. This protective layer helps resist rust and supports longlasting performance. Safe installation During installation, handle the springs with care. Do not loosen the fixed wire. Install the spring with the fixed wire securely to ensure a smooth and reliable sliding motion. Applications Drill press quill mechanism: provides reliable retraction and force for accurate operation. Vacuum cleaner components: suitable for assemblies that require a coil spring for or tension. Safety system or other equipment: appropriate in configurations where a coil spring enables controlled movement and durable performance.