Please note, this kit is compatible with Nexcell Lithium Battery. For NiMH battery hardware kit, see another one of our listings. Unlike NiMH packs, Nexcell Lithium Battery requires only 13 bus bars and 30 nuts. This hardware kit includes 1 extra bus bar and two extra wide flange nuts. Please see https://projectlithium.com/ for installation videos and other useful information. Bus Bars meet OEM product, dimensional and metallurgical specifications; they are precisely designed to be compatible with the Hybrid Battery Pack modules. Nickel Plating provides additional protection to copper against corrosion and tarnishing while retaining its excellent conductive properties. Together with solid stainless steel wide flange nuts, the kit will result in a clean and efficient connection of Hybrid Battery Pack modules for long-lasting repair. Flange Hex Nuts meet DIN 6923 specs, made of solid DIN/ISO A2-70 Stainless Steel, corrosion-resistant steel, also known as ASTM-304.A2 / ASTM-304 (18-8) Stainless with 18% Chromium & 8% Nickel content. CUSTOMER SATISFACTION IS OUR HIGHEST PRIORITY; therefore, if you are not satisfied with your purchase, please reach out to us and we will do everything we can to resolve any issue you might have with the order.