Screws of this diameter have various materials, but stainless steel is good for places with high humidity and rust. It is thin and durable, it can be used for finish fixing as it is inconspicuous, and it is unnecessary to have a pilot hole unless it is a hard material. However, I hope to increase the amount a little more (at around 100 to 200 bottles) to lower the price.
The screw of this diameter also has various materials, but it is also good that it can be applied to a place where it is still damp and rusty, yet the head is not conspicuous and almost no pilot hole is necessary.
The head is thinner than the stainless steel wood screw, it can be surely stopped over the nail. Even in environments where you can not make loud noises such as hitting with a hammer, you can use this product with a screw-on type.