The Grip-tite fins are made from polycarbonate-(lexan). We do guarantee
that they will last at least 2 years. They will eventuallly wear out if
you are cutting corian or run a millwork shop cutting lots of
hardwoods. (on oak, etc. they tend to wear at the sharp wood corner.)
After that they cost $1.50 / pair to replace...
You should not spray wd40 or other sprays on them. Polycarbonate gets
brittle when sprayed with that kind of stuff.
Amost all the fins we replace are ones which the blade has eaten,
instead of fingers.

Jerry
Locutus wrote:
"jack the ripper" wrote in message
oups.com...

Jerry Jaksha
http:// www.grip-tite.com

PS: we are giving away 25 Grip-Tites to public school shop programs
this fall- please tell any shop teachers you know about this.


I use the grip-tite and really like it. Thanks for the good product. (though
I am skeptical about how long the plastic fins will last...)