Caran D'Ache Technograph 777 pencils are a superior-quality graphite pencil suitable for all office, technical and art applications. Full range of 12 lead grades available - from 4H (hardest) to 6B (softest). 7mm hexagonal barrel with 2.1mm - 3.2mm lead. Water-based barrel varnish over premium FSC certified cedar wood. Made in Switzerland.