RIDGID Battery Adapter (Bundle) to DeWalt, Makita and Milwaukee – Power Tools Adapters
Battery Adapter for Makita 18V Lithium-ion Power Tools,for Convert Milwaukee 18V or Dewalt 20V Lithium-ion Battery to Makita 18V Lithium-ion Battery Black - Walmart.com
Amazon.com: ZDTZAN MT20DL Battery Adapter for Makita 18V Li-ion Battery use on Dewalt 20V Battery Tool, Convert for Dewalt 18V 20V DCB200 Li-ion Battery Cordless Power Tools : Tools & Home Improvement