The KS Tools 1/4 Porta bit a cricchetto reversibile is a super handy tool that lets you easily switch between different bits on your drill without having to go back to the toolbox. It's a reversible crutchet with 72 precise teeth, perfect for drilling precise holes in metal and other materials. With a chrome vanadium finish, it's built to last and resistant to wear and tear. This tool is a game-changer for anyone who loves DIY projects, woodwork, or metalwork - it's a must-have for precision and convenience!