Split image focusing screen for 5D2

I just got this and it is too sweet! Dropped in perfectly and no need for any shims. Perfect focus, split screen area is huge compared to Haoda and others. Completely compatible with AF LED's. Microprism collar is effective tho admittedly the matte background is pretty much useless. Only $40 instead of Haoda and others $100's. China guy but shipped from New Hampshire.
Dream come true for us manual lens guys.

Believe me I have no interest in the business this is solely a product recommendation.

http://cgi.ebay.com/Split-Image-Focus-Screen-for-Canon-5D-mark-II-MKII_W0QQitemZ200319878937QQcmdZViewItemQQptZDigital_Camera_Accessories?hash=item2ea3fec719&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1205%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50