Alvin Mechanical Pencils and Lead Holders - Alvin offers a range of Mechanical Drawing Pencils and Lead Holders. 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 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. Hercules Graphic Pencil Lead Holders hold large 5.6mm lead, great for generating broad strokes.