Catch all your shavings in the convenient container. Great for sharpening on the go. Sharpener itself is all metal construction For standard pencils upto 8.2mm at an angle 23 degrees Lid snaps on to prevent spillage Staedtler "where innovation meets tradition" are one of the first pencil manufacturers in the world, dating back to 1835. Records in Nuremburg, Germany show a Freidrich Staedtler as pencil maker as early as 1665. All of their woodcase pencils are certified PEFC or FSC for responsible use of raw wood materials. They are not just known for pencils, but of many other writing, drafting and art products as well. When you see the Mars head symbol, you know you are getting a quality product.