Milwaukee 0725-21 28-Volt 4-1/2-Inch Lithium-Ion Cordless Grinder/Cut-Off Tool Kit Review: The Milwaukee 0725-21 28-Volt 4-1/2-Inch Lithium-Ion Cordless Grinder/Cut-Off Tool Kit is a powerful and versatile tool that can be used for a variety of tasks. The grinder has a 4-1/2-inch cutting wheel, which allows it to cut through metal and stainless steel with ease. One of the key features of this tool is its lithium-ion battery, which provides long run times and fast charging capabilities. This makes it ideal for use on job sites where power availability can be an issue. The grinder also has a remote TSC control, which allows you to adjust the speed and other settings quickly and easily. The Milwaukee 10 Pack - 4 1 2 Cutting Wheels For Grinders is a great addition to this tool kit. These wheels are designed for aggressive cutting of metal and stainless steel, making them ideal for use on job sites where these materials are common. The flat cut off wheels are also included in the pack, which makes it easy to switch between different types of cuts. The Milwaukee 4-1/2 in. Aluminum Oxide Cutting Cut-Off Wheel 0.045 in. thick x 7/8 in. (Pack of 5) is another great addition to this tool kit. This wheel is designed for use with the grinder and provides a fast, efficient cut through metal and stainless steel. Overall, the Milwaukee 0725-21 28-Volt 4-1/2-Inch Lithium-Ion Cordless Grinder/Cut-Off Tool Kit is an excellent choice for anyone looking for a powerful and versatile tool that can be used on job sites. The addition of the Milwaukee 10 Pack - 4 1 2 Cutting Wheels For Grinders and the Milwaukee 4-1/2 in. Aluminum Oxide Cutting Cut-Off Wheel 0.045 in. thick x 7/8 in.