Stainless steel hand files such as K-files and H-files establish the glide path and handle negotiation and finishing that complement rotary shaping. They're a steady consumable kept across a full size range.
When comparing hand files, stock the size range your negotiation and glide-path protocol calls for, then weigh vendor pricing and availability. Alara brings hand files from your connected vendors together so you can keep a complete range on hand without overpaying on your highest-turnover sizes.