These Hedstrom Files are ground from Stainless Steel wire. The flute depth increases with the taper, creating a sharper, more flexible instrument. They are available in packages of six, at 21mm, 25mm, and 30mm lengths. The 11 different sizes are also color-coded. The outside of the impact-resistant, clear plastic box has labeled markers at 21, 25, and 30mm, so one can tell the size of the file without even opening the box!

• White - sizes 15, 45
• Yellow - sizes 20, 50
• Red - sizes 25, 55
• Blue - sizes 30, 60
• Green - 35, 70
• Black - 40