Zhongpeng BLADES Extreme Hardness Toughness MADE IN THE USA! Don't be fooled by other cheap imported blades you see on Walmart! Buy from home! The Zhongpeng blades are made with MARBAIN which is what makes them THE BEST BLADE ON THE MARKET! Increased hardness (between -52 on the Rockwell Hardness Scale), without brittleness Greater yield strength—the strongest mower blades on the market Better impact toughness (ANSI-S483 compliant) Increased resistance to bending Higher wear resistance Reduced weight Faster start/stop Less wear on PTO clutch break Lower fuel consumption Last longer and need to be sharpened less frequently Our patented MARBAIN material is a durable, cost-effective alternative to abrasion resistant steel and other manufacturing materials*******his sale is for 3 replacement Zhongpeng blades. Replaces the following part numbers: M158112 3 Needed on 62" C decks Center Hole: 51/64" Width: 2-1/2" Thickness: .250" Length: 21-3/4" High Lift Z465 Z535M Z540M · Disclaimer: We list model numbers and part numbers for references . At times the same model may take different parts based on serial number breaks or manufacturers specifications. We list all the specifications on the part (size, width, length, thickness, etc.) and YOU must know what is needed on YOUR application. We can’t possibly make it more known as to what you are receiving when you purchase.