Jobber-length drills are the most commonly found type of drill. The length of the flutes is between 9 and 14 times the diameter of the drill, depending on the drill size. So a 1⁄2 in (12.7 mm) diameter drill will be able to drill a hole 4 1⁄2 in (114.3 mm) deep since it is 9 times the diameter in length. A 1⁄8 in (3.2 mm) diameter drill can drill a hole 1 5⁄8 in (41.3 mm) deep since it is 13 times the diameter in flute length.
Advance Drills Inc. is a supplier of industrial products and tools based in Central Florida. In addition to our great industrial products’ selection, Advance Drills Inc. team is the best in the industry. We support our customers through all phases of their needs. Advance Drills Inc. customers are backed by a name they can trust.
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