Awxlumv 4PCS Heat Sink Kit 40x40x20mm Aluminium Heatsink Cooler 40mm for Cooling VRM GPU Stepper Driver 3D Printers Stepper Motor NEMA 17 TEC112706 Thermoelectric Peltier Led

1. Heatsink Material: Anodized aluminum, substrate leveling and thick enough. Smooth surface without scratches and burrs, 2. Heat sink Size: 1.57x1.57x0.79inch /40 x 40 x 20mm, 3. Weight: 1.45 oz / 41g per; Fin: 11PCS; Base Board thicknesses: 0.17inch; Fin thicknesses: 0.05inch; Fin Spacing: 0.1inch, 4. Use for: Cooling for electronic IC chip 3D printer stepper motor, NEMA17, TEC1-12706 Thermoelectric module, power electric device, LED light, regulator devices etc., 5. Thermal conductive glue adhesive paste is the good partner to install the heat sink (gel is not included in the package), 6. Package: 4PCS heatsinks (40mm x 40mm x20mm)