Using the Greenlee 925 - 2 is straightforward. First, make sure you have the 925 - 022 arbor (it's not included with the cutter). Attach the cutter to your drill. When cutting, set your drill to the recommended speed of 150 RPM for the 2' (50.8 mm) cutter. The split - point pilot drill will help you place the hole accurately. Just start the drill and let the precisely - ground teeth do their job to cut smooth, burr - free holes. The spring - loaded slug ejector will pop out the slug automatically, saving you the hassle of removing it manually. Remember, no tools are needed to change cutter sizes, so you can quickly switch as per your requirements. As for maintenance, after each use, clean the cutter to remove any debris. Keep it in a dry place to prevent rust. Since it's made of high - speed steel, it's durable, but still handle it with care to avoid any unnecessary damage to the teeth.