TOP LINK BALL TP-F2680R Fits CAT I Fits John Deere "FREE SHIPPING" One New Aftermarket Replacement Special ball Fits CATegory I top or center link. 3 4" hole. Replaces 105968A Fits John Deere: Fits CATegory I, 3 4" hole for 2" round socket. MODELS 1020, 1520, 1530, 2010, 2020, 2030, 2040, 2240, 2355, 2440, 2510, 2520, 2555, 2630, 2640, 2755, 2840, 2855, 2955, 3010, 3020, 3055, 3155, 3255, 4000, 4010, 4020, 4030, 4040, 4050, 4055, 4230, 4240, 4250, 4255, 4320, 4430, 4440, 4450, 4455, 520, 530, 620, 630, 720, 730