Thank you for your interest. Cast iron pegs are characterized by their ability to firmly handle various situations, from soft ground like lawns and loose soil, to tent sites with lots of stones where other peg materials won't work, and even in windy conditions where tents and tarps might blow away. A length of about 30cm is recommended for cast iron pegs. This length is easy to handle and provides high safety. They won't easily come out unless the ground is very sandy, like a beach. Pros and cons of choosing cast iron pegs: Pros: ・Can be driven into hard ground ・Durable and hard to bend, so they last a long time ・Can be used with confidence even in strong winds Cons: ・The price per peg is high ・Heavy, so they are difficult to carry You can use forged pegs only for areas with high stress and use the included pegs for the rest. Material: Steel Length: 30cm Diameter: 9mm Weight: 160g As a bonus, we also include a glow-in-the-dark ring. This will help you avoid tripping over the pegs in the dark. *Please consult the comment section if you have a desired number of pegs. *Please be assured that although these are imported products and may have some imperfections, we will address any issues with the product.