The cooling fan is a high-speed rotating parts, so do not touch it while it is running Fast Cooling Capability:Experience rapid heat dissipation with the Bambu Lab A1 cooling fan, ensuring optimal 3D printing performance. Compatibility with Bambu... This 4010 fan set only for A1/ A1 Mini series 3d printer, no for X1/X1C/X1E/X1 Carbon/P1P/P1S Bamboo lab 3D Printer Accessories Hotend Heating Assembly Kit - A1 Series for Bambu A1 Mini Extruder Motor Fan Cooling Fan For Bambu Lab A1 / A1 Mini Extruder Motor Cooling Fan Kit Fast Cooling With Independent Switch 3D Printer Parts - 7 3d Printer Accessory Fan Equipped with fan mounting print model, light bar switch connection cable (white terminal XH2., 54 cable length 150mm for fan connection/black terminal MX3., 0mm male rubber casing plug for machine connection), and three 100mm rolled strips to prevent wire mess For Bambu Lab A1 / A1 mini Extruder Motor 4010 Cooling Fan DC 24V Fast Cooling Fan With Independence Switch for Bambu lab Dimensions 40x40x10mm, DC 24V, 7000 rpm, double ball bearings, speed measurement PWM temperature control. The hotend extrusion motor cooling fan is used to dissipate the heat of the motor quickly to prevent the motor from overheating and losing steps