Blade Length: 20-1/2"
Center Hole: 1/2"
Make sure and measure blade to insure proper fit, length can vary 1/8" either direction.
It fits Exmark
(3) for 60" cut, Turf Tracer models (91-188)
(3) for 60" cut, mulcher
Set of 3
OEM# 603283 , 603874
Equivalent part# 91-188 , 91-217 , 596-334 , 396-739