What will you do if you need your hacking tools but you are not with your system. This is really frustrating. You want to hack a website you know is vulnerable but you do not have you tools. You can do it with your skills and by injecting manual sql queries. But most of the kiddies can not. So all those kiddies can use these online SQL injection scanner.
http://www.be007.gigfa.com/scanner/scanner.php
http://www.sunmagazin.com/tools/hack/SQLI-Scan
http://scanner.drie88.tk
http://localvn.biz/Tools/tools/Hack-Shop/SQLI-Scan
http://wolfscps.com/gscanner.php
:) enjoy hacking from any where