Bosch Blue 18v Battery Adaptor to Ryobi One Tools - Etsy
X-Adapter 1x Adapter for Ryobi 18v Tools Works On Bosch 18v Blue Professional Batteries (Not 18v PBA All Battery)- Adapter Only, Black (BS-RY18) : Tools & Home Improvement - Amazon.com
Battery Converter Adapter For Dewalt/milwaukee/makita/bosch/ryobi/metabo Nicad & Nimh Tool For Dewalt 18v Li-ion Battery Dm18rl - Power Tool Accessories - AliExpress