5/8 X 144-3/8

For caster arm

Heavy duty precision spindle bearing

Fits:

• Exmark Turf Tracer serial # 150,000 - 260,000 36", 48" and 52"

Bunton 36", 48", 52" and 61" hydro and belt drive walk-behind

Fits models S910, S930 front mount, 108, 112, 116 lawn tractors, 316, 318, 420 garden tractors, GS25, GS30, GS45, GS75, HD45, HD75, 111 series 12000 and higher