This is a set of 8 types of stainless steel tapping screws, pan head. Head: Pan Sizes: 3x16, 3.5x20, 4x12, 4x16, 4x20, 4x25, 4x30, 4x40 The 4x40 size has large packaging, making it difficult to close the case. In some cases, the packaging may be disassembled for shipping, so we appreciate your understanding. Due to being a stock item, the packaging is discolored. Some items may also be deteriorated. Please check the photos. Thank you for viewing.