The main advantages are:

• Minimization.
• Simple solution for used 4020 fan and 5015 blower
• The hotend fan never blows on the print pad.
• Simple assembly and serviceability of the entire hotend.
• Stock screws are used for mounting to the X-axis mount
• In the event of a malfunction, the hotend cools down by itself and quickly.

5 pcs (7 pcs for old version) M5 x 10mm PC Case Fan Screws are needed to mount the fans.