I have 28 Dutch paired row openers for a c-shank air drill. They were on a concord, will fit any other c-shank drill. 31/2" row spreaders, some have new carbide tips and sealer plates some used about 800 acres,they are set up for liquid fertilizer, asking 20.00 each or take all $500.00crate full, phone, text or email Gus at (306)424-7675.