1 x 40 cm lawnmower knife Suitable for Matrix ELM 1800-430 (1800 - 430) The knife is curved to throw away the grass until the basket is full.  The knife geometry guarantees effective mowing even with side ejection mowers. Other sizes and shapes  can be found in our eBay store. Description [mm]: L: 400;   ZB: 8; AL: 8x7; AB: 65;   Thickness: 2.3     Why our knives? The knives are made of top quality certified steel (50CrV4). Sharp, hardened, balanced (45 HRC) and straight bent, our knives guarantee fine mowing and a long time of use (minimum 3 seasons). Thank you.