Its 8mm in metric, i am not so familair with feet and inches,its about 10/32 in inches i supposed. About the google pianotech, you have to respond in simple words once if you received their email. Anyone can chipped in and help? Cheers. Lim <div class="gmail_quote">On Mar 7, 2013 9:44 AM, "Marshall Gisondi" <<a href="mailto:pianotune05@hotmail.com">pianotune05@hotmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div><div dir="ltr"> Hi Lim, thanks for the size. 8mm? 10/32? Also I sent a blank e-mail to the google list to sign up but am not receiving posts like I do with piano tech. Is there something else I need to do to get on board? I've gotten so used to this list I need to rethink and do something different? oh no somethign else to have to think about lol :-) Marshall Marshall Gisondi MARSHALL'S PIANO SERVICE <a href="tel:215-510-9400" value="+12155109400" target="_blank">215-510-9400</a> <a href="http://www.phillytuner.com" target="_blank">http://www.phillytuner.com</a> </div></div> </blockquote></div>