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. We recommend cast iron pegs with a length of about 30cm. A length of 30cm 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 ・High price per peg ・Heavy, making them 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 let us know your desired number of pegs in the comments section. *Please note that this is an imported product, so there may be some imperfections in the manufacturing. However, we will address any issues with the product, so please feel free to purchase with confidence.