The 4-in-1 file is durable and versatile. Its flat and round surfaces help remove material easily with ability to do both smooth and aggressive filing. With both double cut and rasp mill patterns, bastard teeth spacing and half round and flat files this tool allows you to remove general materials such as wood, soft metals and PVC from both flat surfaces and round holes fast. Stanley® Hand File, 4-in-1 Half Round, 8 in Length, Bastard Double Cut Type, American Pattern Coarseness of Cut, 2.88 in Thickness