Features: Highly power IRF4905 Insulator with TO220 heatsink delivers superior thermal management, maintaining component temperature cooling during demanding operations like motor drives and power supplies. Optimized aluminum alloy heatsink achieves 50W dissipation capacity while premium insulation materials ensures electrical safety and mechanical durability in high temperature environments. Ideal for electronics engineers, enthusiasts, and industrial designers requiring reliability thermal solution for power management systems or circuit prototyping projects. Perfect for stabilizing high current applications including server power units, robotics controllers, and industrial automation equipment operating under continuous heavy loads. This complete IRF4905 insulation set combines corrosions resistant materials with easy installation, offering enhanced aging resistance compared to standard plastic insulators for prolonged device lifespans. Specifications: Type: Insulation set + radiator Component: Silicon + Aluminum Alloy Color: Black + Silver Multiple Size as Picture Show; Package Includes: 1set/20pcs Insulator with TO220 Heatsink note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.