steveo as everyone mention it bogs under pressure another thing i didnt like is it doesnt state the number(1-6) to speed(600-3000)no chart
but the Hf rotary you might consider is this
http://www.harborfreightusa.com/usa/...displayItem.do ( it wont show up so on the item search feature type in "56407" )this one is more powerful and wont bog down, but the downside is it been discountuned
if your interested i have one like new im selling pm if intrested, reason is i came up on a Hitachi, so i have no use for it.....
another high speed you can consider is Vector there a thread on it but i have never used it ....