Hori Garden Knife Stainless Rust Free Blade w/Serrated Edge - MADE IN THE USA - Multi-Purpose Hand Digging Tool - Sod / Root / Plant Cutting Tool / Cast Iron Lifetime Warranty Guaranteed Not To Rust  Made of cast, high-strength stainless steel, heat-treated with reinforcing ribs near the handle These are an excellent tool where you expect to have to chop thru small roots or cut thru sod. Many hori hori knives have very sharp edges on one side. We're not so keen on this because any sharp cutting tool used in dirt won't stay sharp very long. Also since usually you have your other hand so close, you run the risk of slicing your finger. MADE IN THE USA!! Tired of garden tools that rust, break off, cheaply made in China or other countries. Buy American Made Products that have a Guarantee and free replacement!! Using the good steel is not cheap but once you start using this tool, you'll fall in love with it Here at Diggit Inc., we've gone thru many designs and metallurgy processes to come up with a good balance of strength and hardness at a fair price for our Hori Garden Knife. Out of the box, our Hori Garden Knive blade has a fairly heavy gray-purple oxide layer from the 3-stage heat-treat process: 7 hours at temperatures from 925  2100F. NOTEWORTHY: This darker layer will wear off as the tool is used in the dirt and becomes nicely polished the more it is used. We took a brand new Hori and broke up every square inch of a 3 foot by 4 foot by 4 inch deep patch of hard-packed, rocky Seattle glacial till dirt to show how the oxide layer wears off to leave a shiny, silvery surface. If you are lucky enough to have nice, loamy, rock free dirt, you may not even wear thru the dark layer, it is quite tough. "The best weeding tool on Earth" (Ciscoe Morris) Very Comfortable Handle, Hard to lose due to the yellow handle. And its Made in the USA!!