Description 16" x 4mm Ripple Coulter. Has 4" center hole and 4 holes for 1/2" bolts on 5-1/4" circle. Will replace Yetter 2571-161 This item is a suitable alternative for the following: 845-R16402, N446003, CT5016R, 16400WE, 2571-161, 446003, 443263