Easycargo 4pcs 40mm Heatsink 40mmx40mmx20mm, Aluminum Heatsink Kit, Cooling Heat Sink for 3D Printer Stepper Motor NEMA 17, TEC1-12706 Peltier Thermoelectric Cooler Module LED 40x40x20mm (Silvertone)

Includes 4 pieces 40mm aluminum heatsink.

Dimension: 1.57"x1.57"x0.79" / 40mmx40mmx20mm Unit weight: 1.6 oz / 45 gram per piece Can be applied for passive cooling 3D printer stepper motor, TEC1-12706 Thermoelectric module, NEMA17, LED etc