Compatibility: This Lithium Battery Protection Board is designed specifically for Makita electric tools, ensuring optimal performance Material: Made from quality PC, this Battery Charging Protection Board offers great durability and resistance to wear and tear Product Dimensions: With dimensions of 40.2*46.2mm, this compact protection board can easily fit into your electric tool without adding unnecessary bulk Package Contents: Each package contains 1 Lithium Battery Charger Protection Board, making it easy to replace your old or damaged protection board Main Function: over charge, over discharge, short circuit, over current and over heat protection etc Specification: Material: PC Size Chart: 4.02cmx4.62cm/1.58inchx1.82inch Package Includes: 1XBattery Charging Protection Board(2 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!