The Condeu Deep Hole Carpenter Pencils feature an extended tip and a 48mm long nib, reaching hard-to-reach areas where other carpenter markers do not go, compatible with marking through holes or other narrow areas. If you extend the lead, you can even trace through 2.8mm holes. The pencil lead of the carpenter pencil marker can be replaced. After using the sharpener, the sharpener is screwed into the top of the mechanical drawing pencils. Normal storage will not take up much space or cause small items to be lost. The carpenter pencil will not slip out of your fingers, and repeated tracing causes less pain. The pen clip design can be attached to the pocket, not easy to lose, gaining efficiency, compatible with construction. This pencil can be used on all kinds of surfaces, such as metal, plastic, glass, wood, paper and other materials. Yellow and red can be drawn on dark surfaces. The woodworking marker pencil is pre-filled with black lead, comes with a refill holder included 2 black leads, 2 red leads and 2 yellow leads which can meet your long-term woodworking marking needs. Specifications: Length: 150.9mm/5.94in Material: Stainless Steel and Plastic Lead Diameter: 2.8mm/0.11in Color: Red Package Includes: 1 Carpenter Pencil with 1 Built-in Sharpener, 1 Holder of 6 refills (2 black, 2 yellow and 2 red)