Longer 3D Printer Dual Blower Kit Upgraded LK4 LK4 PRO LK5 PRO Cooling Fan 5010 Compatible with Alfawise U20 U30 U30 PRO

Upgraded Dual Blower Kit: Equipped with the dual blower kit, the filament can be cooled quickly after extrusion so that the model is not prone to deformation or wire drawing, which will be better for printing. | Broad Compatibility: 5010 Compatible With Alfawise U20 U30 U30 PRO LK1 LK4 LK4 PRO LK5 PRO