Set of three (3) replacement aftermarket USA made blades that fit 52"  EXMARK: HP, LAZER Z CT, LAZER Z HP, METRO HP, Next Lazer Z AS, NEXT LAZER ASX, NEXT LAZER Z, QUEST, TURF TRACER, VANTAGE, 3 for 52" cut . These blades are 18" long by 2-1/2" wide with a 15/16" center hole and .204" thick. 
Blade specifications as follows:
Overall Length: 18"
Width: 2-1/2"
Thickness: 0.204
Mounting Hole: 15/16 Round
 
 If you are not sure if these will fit your mower just send me an email with your model number and I will be happy to confirm them for you! One day handling and free shipping!