NOT NEEDED IF THE BAVSOUND UNIVERSAL TOOL KIT IS PURCHASED. Includes everything you need to access and install just our Ghost Underseat Subwoofers in your BMW, Mini, or Supra, including specialized Torx bits to allow for the release of your seat bolts.  If you're planning to install your subs yourself, get this kit. What is included: Socket wrench, extension bar, 10mm socket, heavy duty pry tool, screwdriver handle, mini socket wrench, and T-50, T-25, T-20,T-15, T-10, and Philips head bits.