The product presentation includes 15 TROIKA CONSTRUCTION Endless pencils. Each pencil features a 10 mm endless writing tip (HB hardness), recognizable, refillable, and erasable, offering approximately 20 km of writing per tip. The hexagonal aluminum tube has a matte finish and includes a built-in centimeter/inch ruler as well as architectural scales 1:20 / 1:50. It features a hexagonal grip and sustainable refillable leads in multiple colors. Suitable for display in retail stores, schools, offices, and creative workshops.