Wanhao Duplicator i3 Extruder Fan Adapter 40mm to 60mm

This adapter allows you to fit a 60mm fan in place of the stock 40mm fan on the Wanhao Duplicator i3. It also allow you to tighten the whole extruder-motor assembly really well which is not possible with the bolts going through the fan. The adapter has ventilation holes which help to blow the hot air away from the heat sink and holes to keep your extruder wires cool if they're located behind the fan.
There is also a version without vent holes. Designed not to interfere with the belt or any oth