DWDA/CX1221/64 Size: 21/64" x 12" Features: -Drill bit.-Material: High speed steel.-Dec. equivalent: .4063, .2031, .4688, .2344, .2656, .2969, .3281 and .3594. Dimensions: -13/32" x 12" Drill bit flute length: 3-7/8.-13/64" x 12" Drill bit flute length: 2-7/16.-15/32" x 12" Drill bit flute length: 4-5/16.-15/64" x 12" Drill bit flute length: 2-5/8.-17/64" x 12" Drill bit flute length: 2-7/8.-19/64" x 12" Drill bit flute length: 3-1/16.-21/64" x 12" Drill bit flute length: 3-5/16.-23/64" x 12" Drill bit flute length: 3-1/2.-Overall length: 12.-Product weight: 1 lbs.