Hydrangea Plunger Cutter Set of 4. The largest Hydrangea Plunger measures 2 1/4" x 1 3/4", the next biggest Hydrangea Plunger measures 1 3/4" x 1 1/2", the second smallest Hydrangea Plunger measures 1 3/8" x 1 1/8", and the smallest Hydrangea Plunger measures 7/8" x 3/4".