Rear seed cover spring for Marzia open type seeder harrow Open type rear spring tooth for Marzia harrow, of excellent quality made in Italy. Original Marzia seeder code: 71.409 - 56440 - CP1993 Spring measurements for Marzia rear open type seeder: Total length: 320 mm Length from under attack: 215 mm External diameter of the hole: 53 mm Thread thickness: 8mm Connection square length: 160 mm_x000D_Production Made in Italy Applications Marzia harrow and seeder Springs length 215 mm Springs width 160 mm Wire 8 mm Hole 53 mm Spring model Open rear