目前看来DF700要比500应用范围要广,目前已有第三方生产出了adapter,可以用500的bit
here is the link
http://www.senecawoodworking.com/products/rts-500-cutter-adapter-for-festool-df700
here is the link
http://www.senecawoodworking.com/products/rts-500-cutter-adapter-for-festool-df700