[PARAMETER] Size 1: 14 x 14 x 7 mm / 0.55 x 0.55 x 0.28 inch (L*W*H); Size 2: 9 x 9 x 5 mm / 0.35 x 0.35 x 0.2 inch (L*W*H); Color：Gold Tone. [FEATURE] This heatsink come with ordinary self adhesive(without function of conductive), easy to use, strong stickiness. [APPLICATION] The heatsink is a special tool for RPI, as well as for cooling chips, stepper motor driver module and other small electronics that didn't come with any cooling. [MATERIAL] Aluminum alloy, great function for heat transfer. [PACKAGE CONTENT] Total 10 Pieces(5 Set)-5 x Size 1 Heatsink; 5 x Size 2 Heatsink.