Rotary 12714 121-4894 Fits Toro Aerator Tine 4238-140-1800, 121-4894, 522361, 2701410, 1262143, 126-0262, 121-4894, 100032, 522361, 338875, 2701410, 71910, 522361 12714 Aerator Tine 1/2" Closed Spoon, Ryan 522361, Blue Bird 71910, Fits Model Lawnaire Iv, 7-5/8"L, Classen. 0.090 O.D. 30 Required For A Complete Lawnaire Iv Plus Aerator Set, 42 Required For A Complete Lawnaire V Plus Aerator Set. Fits Blue Bird Models 424, 530A And 742 Replaces: Bluebird 71910 Bluebird 0522361 Bluebird 7190 Bluebird 539007211 Bobcat/Ransomes 2701410 Bobcat/Ransomes 338875 Bobcat/Ransomes 522361 Classen 100032 Exmark 121-4894 Exmark 126-0262 Exmark 126-2143 Ryan/Ryobi 2701410 Ryan/Ryobi 522361 Toro 121-4894 Toro 126-0262