DWDDL12X11/16X1/2 Size: 11/16" x 12" Features: -Drill bit. -Material: High speed steel. -Straight shank. -Shank diameter: 1/2. Unit Material: -Steel. Use Material: -Metal. Use: -Drill Bits. Generic Dimensions: -11/16 x 12 Drill bit flute length: 9. -1 x 18 Drill bit flute length: 13. -11/16 x 12 Drill bit overall length: 12. -1 x 18 Drill bit overall length: 18.