I don't understand why there are so few similar tools on the market. There are many insulated screwdrivers of different sizes, even many with replaceable blades, but they all end up taking up a lot of space. I'm not an electrician and only need an isolated driver occasionally, so I wanted a driver that only accepts single bits. So I take up less space with just one screwdriver and have several bits at hand. Felo is perfect for this. It may seem a little pricey, but it's very well made and veryβ¦