ITEM NAME:DIY kits Thermoelectric Peltier Refrigeration Cooling System Water cooling+ Y2Z2 DIY kits Thermoelectric Peltier Refrigeration Cooling System Water cooling+ Y2Z2 Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor Technologies and electronic assembly techniques. Color: as shown Material: metal + pc Notes: Must fititng Radiator Heartsink when Power ON,not resposible for Burn Peltier if Heartsink is not Assemble. Need DC 12V 6A Power ,but not include in this Kit Package Contents: 2 * Cold conduction block 1 * Water Block 2 * Fan with screw 2 * TEC1-12706 2bag * Thermal Grease Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Must fititng Radiator Heartsink when Power ON,not resposible for Burn Peltier if Heartsink is not Assemble. Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor Technologies and electronic assembly techniques.