Here is a summary or excerpt from an article that has just been published on DPNow:

The new Lastolite sync block (non TTL) is ideal for photographers who want the benefits of using a radio trigger but do not have a sync connection socket on their flashgun.
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The new Lastolite sync block (non TTL) is ideal for photographers who want the benefits of using a radio trigger but do not have a sync connection socket on their flashgun.
Click here to read the whole article...