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All the products have been tested before sending to you

Material：Aluminium
Size:L53mm x H22mm
ID: 11mm

There are screw holes, use two 2.5 3W LED tightly fastened screw can
Completely cooling 1pc 3W high power LED without fans. Light up 365 days*24 hours

Suitable for 3W, 5W Power LED
Weight of a 3w heatsink:60g


Package Included:

5PCS x 3W Aluminium Heatsink for High Power LED Bulb 53