Specifications: The length is about 20cm (7.9in); the wire diameter is about 1.5mm (0.06in). Secure Installation: Used to fix recessed lighting fixture trims to ensure that they are safely and securely fixed to the ceiling. High-elasticity torsion spring: Uses a 7.9-inch long torsion spring to provide strong pulling force to prevent the lighting fixtures from loosening or falling off. Stainless Steel: Made of stainless steel, corrosion-resistant, suitable for long-term use, suitable for various lighting environments. Compatibility: Suitable for a variety of recessed lighting fixture frames, compatible with recessed lamps of different brands and models., Manufacturer: EMSea