This battery holder is suitable for storage and classification of power tool batteries. Use strong ABS material. The battery rack is designed with screw holes for fixing. Safe, reliable, sturdy and durable Features : 1: Applicable model： for Milwaukee 18V power tool battery : M18 for DeWalt 18V、18V/54V tool battery : DCB200 DCB184 DCB181 DCB182 DCB120 DCB121 DCB546 DCB547... 2:Secure storage, can mount at any angle, upside down, sideways, under a shelf or on pane or onto a wall. 3:Easy to install, clip into place as if you had plugged into a power tool, released by pressing the release button on the battery . 4:Sturdy ,durable adn practical ,increases the part weight limit to 50lb 5:Material: ABS+PC ,lightweight and easy to use ，can waist on belt.