Alvin - Draft-Line Mechanical Pencil - 0.5mm - The Alvin Draft-Line Mechanical Pencil is economical yet durable, these auto-feed pencils feature a cushion point for comfortable writing control and minimal lead breakage. Ideal for both drafting and general writing. 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.