Ground from Stainless Steel wire. The flute depth increases with the taper, creating a sharper, more flexible instrument. Equipped with a serrated plastic handle. Safe tip prevents overcutting. Expanding flute depth for added flexibility and sharpness. Ideal for root canal enlargement. Hedstrom File is a primed stainless steel wire with a flute depth that increases as it reaches the tip, making the endodontic instrument extra flexible and sharper. Each file features a Stretch B color-coded handle with a serrated pattern that ensures a comfortable, nonslip grip during use.The safe-ended tip helps to avoid overcutting and ledging, especially in curved root canals.