What is a Retroplate? Simply put it, adapts the Trick throw-off to a variety of snare drums WITHOUT modifying either the drum or the throw-off. It simply mates those two together painlessly and smoothly! I didn’t want to be tied down to what ever archaic throw-off a manufacturer installed on a drum. I knew I wanted a choice and that’s why I invented the Domino retroplate™. Use the drop down menu to find your model and pricing. PayPal powered for your convenience!