D121 - Panel Drills Single Ended Silver Bullet Bulk Pack Sutton Tools Silver Bullet Panel Drills are developed to drill holes for rivets in flat and curved panels and used in sheet metal fabrication. 135 self-centring point minimises wandering when starting and ideal for thin materials Flute length designed for shallow hole drilling no deeper than 1.25mm x diameter Made from M2 High Speed Steel (HSS) offering the best combination of strength, heat & wear resistance Bright finish for general purpose applications, non-ferrous metals & plastics Diameter #20 Length 54mm Flute Length 19mm Shank 4.09mm