D123 - Panel Drills Single Ended Stub Silver Bullet Silver Bullet stub drills are a rigid twist drill for use in automatic lathes & hand drilling machines. Developed to drill holes for rivets in flat and curved panels and used in sheet metal fabrication. Flute Length designed for shallow hole drilling no deeper than 3 x diameter 118 split point minimises wandering when starting Precision engineered parallel shank for accurate hole size 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 27mm Shank 4.09mm Rivet Size 4 & 5/32