These stems add great dimension to craft projects and they are available in a range of sizes and colors. The Super Colossal stems are over 35mm wide and 18" long and are great for both school and parties. The Colossal stems are over 15mm wide and 19.5" long and are great for small hands. The Giant stems are 12mm wide and 12" long. The Jumbo stems are 6mm wide and 12" long. The Regular stems are 4mm wide and 12" long. The Sparkle stems are 6mm wide and 12" long. The Striped stems are 6mm wide and 12" long. The Bump stems are 12" long and have 4 bumps per stem.