12-inch concrete finishing trowel blade measures 12 x 4-inch and is made from high-quality heat-treated Swedish Stainless Steel. Each blade is cross ground to just the right dimensions for that perfect feel. Special alloy will not rust, pit, or stain. Guaranteed NO-TURN handles design locks handle to mounting. High strength aluminum mounting is attached to the Swedish Stainless Steel blade with a compression fit stainless steel rivets.