LONGLIFE CLIP strong and permanent attachment to trouser pockets for one-hand operation, LONGLIFE SHARPENER for long-term use, with roll stop, extremely durable and sustainable thanks to high-quality product technology and refillability, high-quality push mechanism for automatic lead feed in the stainless steel tube, its special FOR ALL graphite lead 2B marked on almost all Material surfaces, whether dry, damp, smooth, rough or dusty, can be wiped off smooth surfaces with a damp cloth, a wide range of possible uses thanks to special colored refills for light or dark surfaces, water-soluble or waterproof, refills are extremely easy to refill from the back, improved Dust and moisture protection