TINES DESIGNED W/ HEAT TREATED HOOK STYLE HEADS, ALSO W/INJECTION MOLDED PREMIUM NATURAL RUBBER. FOR HIGH QUALITY & LONG LIFEYOKE HEIGHT: 1-5/8''BOLT HOLE DIA: 3/8''TINE LENGTH BOTTOM OF YOKE: 10''TINE DIA.: 9/32''JOHN DEERE: 54, 64. 74. 75, 650. 660, 670, 671, 672, 673