Multicoluor leads from Bosch are the perfect choice for precise and clean marking with your deep hole marker pencil. The robust 2.8 mm diameter leads are ideal for marking a wide range of materials including stone, concrete, brick, wood and paper. Markings with different meanings are possible even on dark surfaces with the three different types of lead - red, yellow and graphite HB. The 6 multicolour leads are supplied in a handy case for storage and transport.