The 490-110-C193 ultra high lift blade set is a precision-manufactured replacement part that directly replaces 742P05094,742-05094 and 490-110-Y193, featuring a direct-fit design with S center hole configuration that enables seamless installation without modifications for 50 inch cutting deck models including XT1-LT50 Fab, ZT1-50 Fab, ZT2-50 Fab, ZTS1-50 Fab and ZTS2-50 Fab lawn mower units. Constructed with premium heavy-duty steel material and precision sharpened cutting edges paired with an ultra high lift blade profile, this blade set delivers superior clean and even grass cutting performance with enhanced grass clipping evacuation, effectively lifting grass for crisp cuts and efficient discharge or bagging to eliminate clumping and ensure a neat lawn finish, while resolving common issues including uneven cutting, poor clipping flow, blade dulling and bending from contact with rocks and debris. It features a durable anti-rust coated finish to resist corrosion and wear from outdoor moisture, grass clippings and debris buildup for long-lasting sharpness and reliable use, and the thickened blade core provides enhanced structural strength and impact resistance to withstand uneven lawn terrain and frequent mowing tasks. The exact S center hole dimensional matching ensures a tight secure fit with cutting deck spindle components to avoid wobble, vibration and blade slippage during operation, and the balanced blade design optimizes smooth mower performance and reduces strain on internal drive systems for extended equipment life. Built to meet strict cutting and fit standards for lawn mower blade applications, it is recommended to refer to the original equipment owner's manual to confirm proper fit and installation guidelines for your specific machine.