This adapter can make lithium batteries compatible with Ryobi 18V tools, and let you enjoy the benefits of extended run-time of Li-lon batteries on your existing 18V tools. Features: 1. Allows the use of 18V lithium batteries and replacement batteries in most batteries compatible with Dewalt and 18V lithium batteries and replacement batteries in most of batteries compatible with Milwaukee M18. 2. The battery adapter can make lithium batteries compatible with Ryobi 18V tools that use lithium battery or nickel battery. 3. Maximum initial battery voltage ( measured without a workload ) is 20V, nominal voltage is 18V. 4. USB port for charging phones and powering equipment that uses USB, and USB Line is not included. 5. Compact and portable, easy to install and disassemble, upgrade your old tools. Note: 1. Due to manual measurement, the size may be slightly different. Thank you for your understanding. 2. Due to different light conditions and different monitors, item color displayed in photos may be showing slightly different from real object. 3. Can not be used for power tool battery charging, this adapter will not fit into any chargers. Specifications: Model: DM18RL / DM18GL / MT20DL / MT20RNL / DW18ML ( Optional ) DM18RL -- Replacement for Converting Dewalt / Milwaukee to Ryobi DM18GL -- Replacement for Converting Dewalt / Milwaukee to Craftsman MT20DL -- Replacement for Converting Makita to Dewalt MT20RNL -- Replacement for Converting Makita to Ryobi DW18ML -- Replacement for Converting Dewalt to Milwaukee Color: Black Material: ABS Model Item Size Packing Size Net Weight Gross Weight DM18RL 11*7*8.3cm / 4.33*2.76*3.27in 12.5*11*9cm / 4.92*4.33*3.54in 120g / 4.23oz 162g / 5.71oz DM18GL 10.8*7.5*9.5cm / 4.25*2.95*3.74in 12.5*11*9cm / 4.92*4.33*3.54in 126g / 4.44oz 169g / 5.96oz MT20DL 11*7*4.5cm / 4.33*2.76*1.77in 12.5*9*6.5cm / 4.92*3.54*2.56in 100g / 3.53oz 135g / 4.76oz MT20RNL 10.8*7.7*8.8cm / 4.25*3.03*3.46in 12.5*11*9cm / 4.92*4.33*3.54in 145g / 5.11oz 190g / 6.70oz