Rear seed cover spring for Ima La Rocca Cimac seed harrow Open type rear spring tooth for Ima La Rocca Cimac haarrow, of excellent quality made in Italy. Original Ima La Rocca Cimac seeder code: 71.407 - 56437 - CP1991 Spring measurements for rear Ima La Rocca Cimac seeder: Total length: 230 mm Length from under attack: 180 mm External diameter of the hole: 53 mm Thread thickness: 7mm Connection square length: 160 mm_x000D_Material Steel Color Black Production Made in Italy Applications Seeder and harrow I.M.A. La Rocca - Cimac Springs length 180mm Springs width 160 mm Wire 7 mm Hole 53 mm Spring model Standard rear