Alpha reduced shank drill bits are made from titanium nitride coated steel and are suitable for use with 10mm or 12.5mm drill chucks. Features: Made from a single piece of high speed steel to eliminate breakage and increase durability and strength Three flat shank prevents movement or rotation in the chuck 118° split point for improved drilling into pilot holes Suitable for use with metal Alpha reduced shank drill bits – quick reference Code Size Qty 9LM140R 14.0 x 86mm flute, 10.0mm shank 1 9LM145R 14.5 x 86mm flute, 10.0mm shank 1 9LM150R 15.0 x 86mm flute, 12.5mm shank 1 9LM155R 15.5 x 86mm flute, 12.5mm shank 1 9LM160R 16.0 x 86mm flute, 12.5mm shank 1 9LM165R 16.5 x 86mm flute, 12.5mm shank 1 9LM170R 17.0 x 86mm flute, 12.5mm shank 1 9LM175R 17.5 x 86mm flute, 12.5mm shank 1 9LM180R 18.0 x 86mm flute, 12.5mm shank 1 9LM185R 18.5 x 86mm flute, 12.5mm shank 1 9LM190R 19.0 x 86mm flute, 12.5mm shank 1 9LM195R 19.5 x 86mm flute, 12.5mm shank 1 9LM200R 20.0 x 86mm flute, 12.5mm shank 1 9LM210R 21.0 x 86mm flute, 12.5mm shank 1 9LM220R 22.0 x 86mm flute, 12.5mm shank 1 9LM230R 23.0 x 86mm flute, 12.5mm shank 1 9LM240R 24.0 x 86mm flute, 12.5mm shank 1 9LM250R 25.0 x 86mm flute, 12.5mm shank 1 9LM260R 26.0 x 86mm flute, 12.5mm shank 1 Reduced shank drill bits are often referred to as jobbers.