size of the 'tripple square socket..?

[The Radium King]

if you order from pelican, beware the porsche tax. the 5-speed is actually an audi transmission and requires the same tool. if you buy the tool from the porsche side of the pelican website - $32. if you buy the tool fro the audi/vw side of the pelican website - $8. the porsche tool is of course 'high performance'; it reduces the weight of your wallet by a few ounces.

[JAAY]

I bought mine in a set at Lowes. Not the best tools ever but has worked for years many times.