Our 10-piece needle file set (3mm x 140mm)-a great set for filing wood, gold, silver, platinum, plastic and other hard-to-file materials. These Files Have A Swiss Cut #2; Swiss-Cut Files Are Graded By The Number Of Teeth, Counting Teeth Perpendicular To The Long Axis Of The File. Round-Handled Needle Files In A Plastic Pouch. Suitable For Detailed Finishing Of Plastic, Wood, Soft Metal Or Marble. Material: Carbon Steel Color: Black Dimensions: 5-1/2" x 3mm Shapes include: Round, equalling, tapered round, half round, barrette, crossing, knife, warding, square, and three square