, I work in a carpentry workshop on the weekends and wanted to have a good selection of bits so I wouldn't have to run out and buy a new one for a project. These are a good choice, but they don't seem to be of very high quality and if you're serious about your bits you'd be better off buying them individually. The storage box is cheap and of poor quality. The bits have worked so far and being carbide I hope they retain their sharpness.