1-inch diameter double plunger for Mini Donuts, for Donut Robot® Mark II GP, Mark II GP Gas, and Mark V GP. Belshaw Adamatic by Unisource Donut Robot Double Plunger for Mini Donuts 1" [MK-1023x1] is perfect for your establishment. Belshaw Adamatic Bakery Group has served the baking industry for over 90 years and is one of the leading bakery equipment companies in the USA. Belshaw and Adamatic combined in 2007 to provide equipment for retail and wholesale bakeries, QSR’s, Supermarkets, Concession operators, and many more.