1,Built in PCBA: With built in PCBA, circuit of the circuit of the adapter is protected well and it also prolongs the service life of the battery adapter. 2,18V to 20V: This adapter can convert M18 18V lithium battery to for Worx 20V 4pin lithium battery. 3,ABS Material: Made of premium ABS material, this battery adapter is strong and sturdy, wear resistance and has a long life span. 4,Easy Carrying: This battery converter is small in size and light in weight, easy to carry and store, convenient to use. 5,Standard Size: When you use this battery adapter, it can hold the battery firmly without shaking, providing a better experience. Item Type: Battery Adapter Product Material: ABS Scope of Application: Convert M18 18V Lithium Battery to for Worx 20V 4pin Lithium Battery 1 x Battery Adapter Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.