We've switched from ash to hard maple for our Collet Tool Handles. These are turned for us in Pennsylvania and finished with a coat of wipe-on polyurethane.
With this posting you'll also see two customer turned examples from Rick Auge and Eric Godwin. Rick had this to say: "Excellent combo. I put them into 20” and 24” handles. Excellent for all around use and exceptional for hollowing / no vibration & no slipping with curved hollowing tools & no marring of the tool shank by using set screws."
And Eric featured his example in his woodturning blog: http://godwinswoodturning.com/blog/ along with some nice comments and photographs from his effort.
Thanks Rick and Eric !