Quick Chuck With Collets Great for Metalsmiths, Metal Working & Holding Bits This is a new quick chuck with 3 collets Comes with 3 collets that can hold a variety of drill bits, burs, saw blades, files, etc This can be used in hand drills or electric drills The quick chuck measures approximately 2 3/4" x 7/16" (70 x 11 mm) Each collet measures approximately 13/16" x 1/4" (21 x 6.5 mm) Newer versions of the item shown may be shipped, as a result, there may be a slight variation in color and design.