Alvin Draft-Matic Mechanical Pencils are designed for professionals. These auto feed pencils feature rubberized barrels, knurled stainless steel finger grips, rotating lead degree windows and shock-absorbing reflex 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. Available in four lead diameters. Built-in eraser under cap.