... .one side coarse,one side fine 3.environmental-friendly wooden foot file1.Our wooden foot files are made of 100% nature wood and waterproof ... requirements, like 60,80,120,180,240,etc. 2.Our wooden foot files are dry and spray-paint, which can prevent from ... be used in the water for lone time. 4.Our wooden foot files are environmentally friendly.We make test for all the ...