For Makita Battery Adapter to Ryobi 18v Works with Ryobi 18v Tool | eBay
Makita Adapter : r/ryobi
Amazon.com: ZDTZAN Battery Adapter MT20RNL for Makita 18V Battery to Ryobi 18V Battery, Convert for Makita 18V Battery to Ryobi 18V Lithium-ion Battery Tool Use : Tools & Home Improvement