The Braille 2012K SAE Terminal Kit converts batteries which have M6 female terminals to an SAE male round post. The posts are made from billet brass and are knurled to provide a better clamping grip for the terminal. Each kit includes 1 x positive terminal, 1 x negative terminal and 2 x M6 screws to attach the terminals to the battery.
Braille Lithium Mounts web link.