This is a replacement female sync cord jack for Speedotron power packs that accept monoplug sync cords.
Note: Speedotron power packs store high levels of electricity. Attempting to repair a power pack could result in serious injury to yourself, and damage to the equipment, voiding the warranty. Speedotron and B&H recommend you send your Speedotron power pack to an authorized service center for any repairs or alterations. Neither company will be held responsible for personal injury or property damage, should you disregard this caution.