This mechanical carpenter pencil set integrates high-quality stainless steel pen holders, rich pen tip configurations (including three boxes of black pen tips, one box of classic three color pen tips, and one box of six color pen tips, totaling 34), four professional carpenter pencils, deep hole marking structures, and practical sharpening tools, designed specifically for architects, carpenters, and drawing enthusiasts. The stainless steel pen clip is sturdy and durable, with a rich texture; Deep hole design ensures precise marking and improves work efficiency; Multiple color pen refills meet diverse creative needs; Four carpenter pencils can leave clear and lasting marks on various materials; Sharpener keeps the pen tip sharp at all times; Enjoy comprehensive after-sales service to ensure a pleasant and worry free user experience. Whether it's professional drawing, on-site marking, or daily notes, this pencil set can easily handle them, making it an ideal partner for your creativity and work.