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This is the RROD (Red Ring Of Death) repair kit that was manufactured by the legendary Team Xecuter.
The kit comprises of specially formulated heatsinks called "K-Pads" which solve most issues that cause the RROD. Of course it cannot be guaranteed that this will work for your console as there are other reasons for the RROD - however this fix has cured almost every one we have come across. It's so cheap that it's crazy not to give it a try :)
This kit is very easy to install and includes enough pads for 10 Xbox 360's. This kit does not include any screwdrivers (you need Torx 10 and Torx8) - just the specially formulated heatsinks.
Note: Simple instructions for these kits cab be found here: http://www.team-xecuter.com/forums/showthread.php?t=47689
As this kit fixes most but not all RROD issues we cannot offer any guarantee of 100% success.
Second time I've brought from CK3.co.uk and as before my item arrived the day after ordering. Product works as advertised and fixed my 360. Highly recommended.