Complete set: there are 13 different drill sizes that you can use for different purposes Wireless: The carbon steel construction with titanium coating holds the longest stand. The high-performance shaft provides maximum durability Beautiful design: polishing the surface with special treatment, wear-resistant, rust-proof and beautiful Efficiency: The unique tip design makes drilling holes easier and improves work efficiency Easy to use: spade chisels use double cutting spurs that carve wood and carve it away, reducing breakouts