3 Side Edger Star Blade replacement blade designed for reliable edging performance and broad equipment compatibility. Key benefits Wide compatibility: Replaces part numbers 7810748, 78107480637, 40009, 981, 074849, 105, and M017 and is specifically designed for use with Troy Bilt TB554 while fitting many other edgers with the same mounting and size specifications. Long service life: Made from carbon steel with heattreated reinforcement to resist bending, breaking, and general wear under repeated use. Accurate fit and performance: Precision dimensions include a 5/8inch center hole and a 9.0inch length by 9.0inch width, ensuring proper fit, balance, and consistent cutting action. Flexible installation: Identical cutting surfaces on both sides allow mounting either side up to extend usable life and simplify replacement. Features and function Material and treatment: carbon steel construction plus heat treatment provides durability for regular edging tasks and tougher conditions. Dualsided cutting: Both sides are finished for cutting, so the blade can be flipped to use the second edge when one side becomes worn. Mounting and fit: 5/8inch center hole matches common edger shafts and the square 9.0inch by 9.0inch profile meets the dimensions required by many threesided star edger setups. Application versatility: Suitable for routine lawn edging, trimming compacted soil along walkways and driveways, and drive shaft cutting operations where this blade style is required. Use scenarios a worn blade on a Troy Bilt TB554 to restore clean, square edges along sidewalks and driveways. Edge turf and loosen compacted soil before installing edging material or laying pavers. Carry as a spare blade for landscaping contractors who service multiple edger brands that accept 5/8inch center hole, 9inch threeside blades. What to expect Straightforward swapin installation for compatible edgers, consistent cutting performance, and extended service life thanks to durable construction and the ability to use both sides of the blade.