Big bashers mean big speed, big air, and big wrecks.  When you're playing with the big boys, you need to make sure your batteries stay right where they're supposed to.  Our Non-Slip Battery Set for 6S includes one 265mm x 15mm strap and one 380mm x 20mm strap (length is measured from plastic loop to the beginning of the hook section of the strap).  Each strap has a non-slip coating to help keep your batteries securely in place. These are sized specifically to work in Arrma 1/8th scale vehicles like the Kraton, Outcast 6S, Notorious 6S, Mojave, Typhon 6S, as well as many other surface and air applications.  So don't just sit there...grab a set and send it!