Special featuresOne of the most used items on the construction site is the pencil. A special pencil for writing on wet and enamelled surfaces such as ceramics, marble, granite, etc. The oily composition of the graphite lead in the RUBI construction pencil allows you to make marks or notes on a smooth or wet surface and makes it easier to clean with a damp cloth. Another feature of the RUBI construction pencil is its triangular shape. It does not roll away and can be used by both left and right-handed people. Specially designed for writing on damp and enamelled surfaces such as: ceramics, marble, granite, etc. Supplied as standard2 pencils