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- Dec 25, 2011
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Technically, the name for the assembly for closing collets is "Collet Closer" or perhaps better is Lever Operated Collet Closer. But it is NOT a draw bar. Draw bars are solid and have male threads. The tube on the closer, regardless of whether lever type, hand wheel type, etc., is called a draw tube. It is hollow and has internal threads. Just about the only two common types of collets that use a draw bar are the MT or Morse Taper collets and the R8 collets.
