1Tower structure with 5mm copper pipe, multi-layer radiator, 7-blade powerful fan bring good heat dissipation effect 2The fan has 7 different color LEDs, which can be changed automatically to make your fan more beautiful and personalized 3The product is suitable for Raspberry Pi 3B+ and for Raspberry Pi 4B 4Plug and play, easy to use, without other special requirements 5Ice tower cooling possess stable structure, excellent performance and long service life Item Type: Ice Tower Cooling Tower structure, approx. 5mm / 0.2in copper tube Multilayer Heat Dissipation Material: Aluminum alloy + copper tube Rated Power: 0.4W at 5V, 0.08A LED: 7 Color LED Applicable Model: For Raspberry Pi 4B/3B+/3B Size: Approx. 44mm / 1.7in 14mm / 0.6in 20mm / 0.8in 35mm / 1.4in 1 x Ice Tower Radiator with Fan 2 x Steel Mounting Bracket 1 x Screws Package 3 x Cooling Film 1 x Screwdriver 1 x Panel 1 x User Manual