The STIGA 1810044530 is a genuine OEM mulching blade designed for specific STIGA lawnmower models. With a length of 550 mm, this blade is engineered for optimal grass cutting and mulching performance, returning fine clippings to the lawn as natural fertilizer. It features a central hole diameter of 18.5 mm and two outer holes of 8.5 mm, spaced 65 mm apart, ensuring a precise fit and reliable operation. This blade is a direct replacement for the original part, guaranteeing compatibility and maintaining the efficiency of your STIGA machinery.