This product can be combined with a battery (NOT included) to make a power drive, applicable to DIY of power drive and scientific experiments. Features: Mainly made of selected ABS material, wear resistant, with reliable quality and great durability. Adopts high temperature resistant wire with the length of over 135mm. Mainly used for battery (not included) on electric tools, and it is a special converter for DIY production, testing and emergency of life driven by power . It's also suitable for people who do scientific experiments or who inventions. 3 types for your option: replacement for Metabo 18V/ Hansch 18V/ BLACK+DECKER 20V battery. Specifications: Type: Type 1/ Type 2/ Type 3 (Optional) *Type 1: Replacement for Metabo 18V Battery *Type 2: Replacement for Hansch 18V Battery *Type 3: Replacement for BLACK+DECKER 20V Battery Color: Black Material: ABS + Item Size: Approx. 10 * 7.8 * 3.9cm / 3.94 * 3.07 * 1.54in Item Weight: Approx. Type 1: 101g / 3.55oz Type 2: 96g / 3.40oz Type 3: 98g / 3.43oz Package Size: Approx. 11.5 * 8.8 * 5.5cm / 4.52 * 3.46 * 2.17in Package Weight: Approx. Type 1: 136g / 4.79oz Type 2: 130g / 4.59oz Type 3: 132g / 4.65oz Package List: 1 * Converter