HRB215 K1 PXA (MZBA) - Honda 21" Walk-Behind Mower, Made in USA (SN: MZBA-6100001 - MZBA-6199999). HRB215 K1 SXA (MZBA) - Honda 21" Walk-Behind Mower, Made in USA (SN: MZBA-6100001 - MZBA-6199999). HRB215 K2 HXA (MZBA) - Honda 21" Walk-Behind Mower, Made in USA (SN: MZBA-6200001 - MZBA-6299999).
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