Features: Deep Hole Marker: The construction pencils in this set feature a 45 mm long nib design, allowing for accessibility in tight areas that other woodworking pens can't reach. The set includes refills in three colors for distinguishing marks and can easily mark on dark surfaces. Quality Marker Tool: The refill design extends the life of the woodworking marker, increases durability, and prevents easy breakage. This makes it an ideal tool for carpenters, builders, or anyone who requires a sturdy pencil for marking a variety of surfaces. Built-in Sharpener: Each wax pencil in this set comes equipped with a built-in sharpener located on top of the mechanical drawing pencils, providing users with an added convenience while working. Carbide Scribe Tool: The metal marking pen in the set includes a tungsten carbide tip that can mark on hard materials, such as hardened steel, stainless steel, ceramics, and glass. This essential machining tool offers precise line marking. Convenient Design: The pencils are designed with a portable pen clip, allowing for easy carrying during work hours. Specifications: Marker Length: 45 mm Deep Hole Woodworking Pencils Thickness: 2.8 mm Mechanical Pencils Thickness: 2 mm Nib Design: Long for reaching tight areas Material: Wax pencils, Carbide Scribe Tool Refill Colors: Three Built-in Sharpener: Yes Tip Material: Tungsten carbide Package included: 3 x Deep Hole Woodworking Pencils 3 x Mechanical Pencils 1 x Carbide Marking Pen 12 x Pencil Refills 24 x Mechanical Pencils Refills