Brand new Semiconductor coolers are a kind of stable state cooling featuring both semiconductor Technologies and electronic assembly techniques. Suitable for: small space cooling, studying the principle of semiconductor refrigeration, doggy air conditioning, etc. Colour:Silver+blue Material:aluminum Size:98x60x46MM Package Contents: 2 x cooling blocks 2 x fans 8 x screws 2 x solving screws 1 x water cooling heads 2x thermal adhesive Note: The refrigerating sheet isn't included. Only the above package content, different products aren't included. Note: Light capturing and varied reveals may cause the color of the article within the photo just a little diversified from the real thing. The size allowed error is +/- 1-3cm.