When choosing an impact driver, there are several factors to consider.
The most important questions are, what type of fastener do you need to drive, and what kind of material will you be driving the fasteners into? Because every type of impact driver has different uses, these things will influence which one you buy and how much power, rotational force and torque you need. Generally, the bigger the task and the harder the material, the more power, force and torque you'll need.
Another thing to consider is how often you'll use it. For example, if it's for infrequent DIY use, you probably won't need as much power as a tradesperson who will use the tool frequently. Your budget is also something to consider.
Impact driver vs drill
The most obvious difference between an impact driver and drill is that an impact driver is designed to drive fasteners, while the drill is designed to bore holes. However, some drills also have a screwdriver function.
There are some pros to having a combined drill and driver. You get two tools in one, which saves on costs, and it’s more convenient than constantly swapping between tools. But there are also cons. Drills don’t have enough torque to reliably drive fasteners through hard materials. They drive fasteners slowly compared to an impact driver. And they rotate much faster, which means you have less control, and screw heads tend to get damaged.
There are a few other drills and impact driver types that often get confused:
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