Due to the unreliability of these LED units, I will no longer be able to supply these to you. If you wish to purchase them yourself, they are available through AliExpress online orders. You will need to modify them yourself to make them suitable for use on your flash unit. There are a couple of different models available. Some come with a plastic case, and some are metal. The metal ones are more robust, but harder to modify. When they work, they work well.