MEDIUM KENZAN: Kenzan flower frog in medium size diameter 40mm/ 1.57 inch. Pins are 11mm long, 91 pins per Kenzan. Study flower frog, easy to carry and store. Perfect floral frog for florist, home, kitchen, bedroom and classroom teaching. Pack includes 1pc Kenzan. HIGH GRADE AND STURDY MATERIAL: The ikebana Kenzan flower frog is made of high grade brass which is strong and sturdy for woody material, as well as soft plants. USAGE: Kenzan is the most useful and intriguing ikebana tool for beginners and advanced ikebanists. Flower frog pins hold stems in place and, at the same time, expand the stems. This hydrates them more thoroughly, thus extending the life of your floral arrangement. Ideal for doing floral arrangement or DIY flower crafts to decor home, kitchen and bedroom. EASY TO USE: Place Kenzan in a vase or other container, secure flowers or branches by pushing the ends onto the flower frog needles. Cut stem at a very sharp angle or in a point for easier placement of plant material onto the Kenzan. You can also cut a portion of stem away to wedge it between the pins. RUBBER GASKET: Each Kenzan has a detachable rubber gasket which fits around the base to give the protection to the vase or container. It also provide the better replacement of the Kenzan.