Alvin - Draft-Matic Mechanical Pencil - 0.5mm - Black - The Alvin Draft-Matic Mechanical Pencil is designed for professionals. These auto-feed pencils feature knurled stainless steel finger grips, rotating lead degree windows, and cushion points for comfortable writing control and minimal lead breakage. The 4mm long stainless steel lead sleeve supports the lead and provides drawing accuracy even with thick straightedges. Offered in four lead diameters. Built-in eraser under cap. Alvin is one of the primary sources for drafting supplies and drawing equipment in the country. Creative Coldsnow is a pround retailer of Alvin graphic arts, drafting and fine arts products.