Features: This set of durable 10 piece titanium nitride coated drill bits lasts six times longer than standard drill bits. Titanium nitride coating facilitates faster penetration with less effort. The 1/4"" hex shank is specially designed for cordless screwdrivers, enabling you to quickly change drill bits. Titanium coated HSS drill set with standard 1/4"" hex shank that will fit cordless screwdrivers, drills etc or use in standard drill chuck Suitable for use with steel, wood, plastic etc Titanium coated drill bits Longer life and durability Specification: Material: metal Color: golden Size: 25*20*5cm Package Included: 1 x drill bit set Notes: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!