Features: Suitable with Mutian to Daiyi A 3 battery conversion and Daiyi A 3 to Mutian tool, this premium battery adapter ensures safe power transfer without voltages fluctuations or sudden disconnections. Crafted from solid high quality plastic, its delicate design integrates over charge/discharges protections and short circuits prevention for worry release tool operation. Ideal for professional tradespeople and DIY enthusiasts requiring crosses brand battery compatibility between two brand power tool. Perfect for extending battery utility in workshops, job sites, or home projects where multiple tool brands is used interchangeably. Streamlines your workflows with this functional battery converters that maintains tool performances while eliminating brand locking battery restrictions. Specifications: Color: Black Material: Plastic Diameter: 47mm/60mm Style: Mutian battery turns to Dayi A 3/Dayi A 3 battery turns to Mutian（Optional） Package Includes: 1Pc Battery converters note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.