Features: Engineered for precisely deep hole marking, this 2.8mm woodworking pencil refills features 12cm long that effortlessly reaches narrow cavities in woodworking and engineering project. Each box contains 6pieces extended length automatic pencil refills, delivering durability of standard refills for uninterrupted technical drawing. Suitable for professional engineers, architects, and craft enthusiasts requiring millimeter accuracy in detailed woodworking marking applications. Widely used for cabinetry joinery, mechanical blueprinting, woodworking drafting, and scale model drawing where traditional wood pencils fail to access confined spaces. The elongated refills tip maintains clearly visibility in deep bore drilling setups while fit most 2.8mm woodworking pencils mechanical drafting pencils. Specifications: Component: Pencil Refills Color: Black, Redness, Yellow, White, Blue, Green Size: Approx. 12cm/4.72in Weight: Approx. 24g Package Includes: 6Pieces Pencil Refills note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color