Single pieces. Please select which number of hours you need. 
 
**NOTICE these are only availble for hours 7500 and above. 
 
AVAILABLE NUMBERS ARE: (7500, 8750, 10000, 12500, 15000 ,17500, 20000, 22500, 25000, 30000, 35000, 40000, 45000, 50000)