ENHANCED STABILITY - Features a robust 66mm rubber magnet, ensuring a secure and steadfast grip on any metallic surface for reliable mounting in diverse environments. VERSATILE COMPATIBILITY - Designed to accommodate T-12 LED lamp tubes with diameters ranging from 38 to 42mm, offering broad application across various lighting setups. DURABLE CONSTRUCTION - Crafted from high-quality aluminum and rubber, this holder guarantees long-lasting performance and resilience against wear and tear in demanding conditions. EASY INSTALLATION - The universal single LED tube holder allows for quick and effortless setup, saving valuable time and effort during lighting arrangement and adjustments.