Time to replace the blade on your FLINT Leathercraft Industrial Knife Set? We have you covered with this authentic FLINT pack of two, replacement blade in D2 stainless steel. These will fit perfectly with your FLINT Industrial knife set and is perfect to replace your worn out old blade.This listing includes two blades in your choice of two curved blades or two straight blades. Please note: The knife pictured is for illustrative purposes only and is not included in the sale.Each replacement blade, whether curved or straight is made of D2 tool steel, comprised of 1.4% - 1.6% carbon, 0.60% manganese, 11.00% - 13.00% chromium, 0.30% nickel, 1.10% vanadium, and 0.70% - 1.20% molybdenum, giving it exceptional strength and rust resistant qualities. The primary use of D2 steel is for making stamping dies that cut steel pieces out of other, softer steels. Rarely is this premium steel used to make blades, but when it is, you know it will leave the competition in the dust.To replace the blade, carefully unscrew the ferrule, taking care to avoid the blade (cut resistant gloves are recommended). Once the ferrule is sufficiently loosened, using pliers or similar tool, grasp the blade you wish to remove and gently work free from the handle. Safely dispose of blade before replacing, again using pliers or similar tool to seat the replacement blade firmly back into the handle, before re-tightening the ferrule. Ensure new blade is secure before use.To sharpen the blade, grip the handle firmly and run the blade in a smooth, stroking motion firmly over the surface of a FLINT Sharpening Rod (sold separately) along both bevels, until the blade has achieved sufficient sharpness. Once your blade is sharp again, strop both bevels of the blade over the flesh side of some leather that has been treated with jewellers rouge. Should the blade deform or show wear from excessive sharpening, discard the blades safely and replace with new ones.Suitable for FLINT brand knives only.Each FLINT tool is designed and commissioned by Craft Sha of Japan and held to the highest quality controls in the industry. Ensure you're using genuine quality FLINT tolls and accessories for best results.