Flower Frog (Kenzan) - Assorted SizesOften called flower frogs, pin frogs, or traditionally known as a kenzan. These floral pin holders are an age old classic for sustainable floral design. Pin holders are a great alternative to floral foam, and are designed to last for decades! Made from rust free materials. Kenzan, a Japanese term that means sword mountain. This name refers to the pin frog flower holder which is used in Ikebana flower arranging. Ikebana is a ancient Japanese art form