Stoelting 2187793 Coupler 1In Square 1-7/8In Lg.This is a genuine OEM replacement part from Stoelting Stoelting has earned a strong reputation as a top foodservice equipment manufacturer, specializing in frozen dessert equipment, such as soft serve and frozen yogurt machines, shake freezers, Italian ice machines, frozen beverage dispensers, batch freezers, and refrigerated display cabinets.