Somta Extra Long Series Drill - HSS-E Parabolic Flute - 13.5mm x 380mmThe Somta Extra Long Series Drill HSS E Parabolic Flute 13. 5mm x 380mm is purpose built for serious deep hole work. With extended reach and rugged construction, it powers through thick workpieces in a single, precise pass, reducing setup time and increasing accuracy on every job. Key features that set this drill apart Extended reach for deep holes at 380mm overall length, this drill reaches into heavy blocks, engine components, and long pockets where