Has anyone used or have any comments on the following tool for compressing valve springs from Snapon:

http://buy1.snapon.com/catalog/item.asp?P65=&tool=all&item_ID=57468&group_ID=1575&store=snapon-store&dir=catalog

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1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009) - Sold
2004 E500 Wagon (6/2013) - Sold