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This Heatsink (one of the central pieces of a lightsaber) is made to connect with the other modular lightsaber pieces that you will find in my shop. This part, like my other modular lightsaber parts, is sized to accept a small flashlight inside like the one found here: https://www.harborfreight.com/3-12-in-Mini-Flashlight-69111.html
This Heatsink is modeled somewhat after the crossguard of Kylo Ren, but the cross pieces are much smaller. A very unique look to add to your own custom lightsaber.