Specification Model B4020D24TAVoltage 24VCurrent 0 30ASpeed 12000 RPMDimensions 40mm x 40mm x 20mmCompatibility K1 K1 Max 3D PrintersFeatures 1 High speed 12000 RPM fan ensures effective heat dissipation 2 Dual ball bearing design for prolonged operational life 3 Compact size 40mm x 40mm x 20mm ideal for tight spaces within 3D printers 4 Lower noise levels for a quieter 3D printing environment 5 Easy installation with a 75mm length four wire connector Package Includes 1 x 4020 24V Dual Ball Turbine Cooling Fan for K1 K1 Max 3D Printer