Brand new Semiconductor coolers are a sort of steady state cooling featuring both semiconductor Technologies and electronic assembly techniques. Suitable for: small space cooling, learning the primary of semiconductor refrigeration, puppy air conditioning, etc. Colour:Silver+blue Material:aluminum Size:98x60x46MM Package Contents: 2 x cooling blocks 2 x followers eight 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, other products should not included. Note: Light and assorted exhibits may cause the colour of the object in the photo a little assorted from the real thing. The dimension allowed error is +/- 1-3cm.