I've installed a eight of these deadbolts on my house now and really like them! Good sturdy unit, well machined and easy installation. Two screws for the deadbolt itself and two heavy machine screws hold it together. Really nice tactice feel once installed and one of those rare occasions when even DW likes the look, style and feel. Pretty cool for just a deadbolt! Instructions are easy. If you need 2-3/4" setbacks, just pull and twist the deadbolt and you have it.