135-degree split point and twist design, good for self-centering and prevent "walking". Bits 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, 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:Golden Package Contents: 13 * Drill Bits 1 * Storage Box Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.