Greenlee battery power knocked out sets are more versatile and durable than hand operated ratchet knockout kits, providing a powerful, quiet, and smooth punch. The 6T M18 force logic 6T knockout tool is 40 percent lighter and more compact than the older model, and the cross hairs on the punch and die make for a very accurate cut. It includes everything you need to begin creating the required knockouts, and comes with a 5 year battery warranty.