Blueshark See-Thru Flap Discs Coming in 2014 !!!

     The see-thru flap discs can make you always see what and where you are grinding for control your workings easy. The special shaped flaps and backings create a see-through area and you can directly see the work-piece situation during processing . It's can avoid over grinding especially when processing expensive work-pieces and help you control everything as you want.

http://www.abrasives-wheel.com/news_show/en/see-through-flap-discs-64.html