ITEM NAME:50Pieces 14x10x20mm Aluminum Heat Sink IC Heatsink Cooling Fin For CPU LED Power Description: The heatsink is with glue tape on the back. Viscosity is very strong, easy to use. Made of aluminum alloy, not easy to rust. For low-power LED chip cooling and raspberry pi IC cooling Size: 14x10x20mm/0.56x0.39x0.79" Package Includes: 50Pieces Heatsinks SKU: ALU0037704063017780.50Pieces Heatsinks. The heatsink is with glue tape on the back. For low-power LED chip cooling and raspberry pi IC cooling. SKU: ALU0037704063017780.