135-degree split and twist design, good for -centering and prevent "walking". are made of high speed steel with a titanium nitride coating for good durability. left handed design can also be used with screw extractors to remove broken fasteners. Attachable to reversible drills to remove screws, bolts and studs around , garage or on the . Comes in a box for easy carrying and storage. Sizes: 1/4 inch, 15/64 inch, 7/32 inch, 13/64 inch, 3/16 inch, 11/64 inch, 5/32 inch, 9/64 inch, 1/8 inch, 7/64 inch, 3/32 inch, 5/64 inch, 1/16 inch Box Size: 14 x 11 * 2cm / 5.5 x 4.33 x 0.8 inch Package Weight: 264g / 9.33oz Material:High speed steel colour: Package Contents: 13 * Drill 1 * Storage Box Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.