... the center of the tube, no askew lead originals materials: paperstrong 2B lead pencilsstraight barrelstrong lead,not easy to be breaklead stay in ... the center of the tube, no askew lead size:172*7.2mmmaterials:kraft, 100%recyclecolour of barrel:light ... to sharpen4.any customized patterns can be makes into5.strong lead,not easy to break6.tested product, we can supply reference ...