TAP KAM Bouzouki Bridge Pickup

I bought this to fit to a flat-back mandala. It was easy to fit and the sound is excellent - it would be good at any price, but it's fabulous value.
However, as the pickup could be used on a wide variety of instruments, it would have been helpful if some technical specifications could be included in the item's description, e.g. minimum and maximum height, maximum string spacing, etc.