We now sell these in two different variants, both are dual ball-bearing, however one is a 12000 RPM version which delivers .55cfm more. Both are great fans for 3D Printer part cooling!

Brand: GDSTIME

Model:GDB4010

Type:Centrifugal Blower

Airflow: 3.62cfm / 4.17cfm

Weight: 12g / 15g

Noise: 35dBA / 37dBA

Connector: XH2.54 30CM

Speed: 9500 RPM / 12000 RPM

Power: DC 24V 0.08A

Size: 40mmx40mmx10mm