Get everything you will need to optimize your TANK® experience in this all in one kit! The TANK M4 continues the evolution of this unique push sled on wheels. The core technology that makes all TANK models unique is that unlike resistance sleds, they can be run indoors or outdoors on any surface without gouging. Also on all TANK models the resistance increases the faster you push it, so each user can choose their resistance on the fly, without stopping to load or unload plates. The TANK Strap/Harness Tow Kit expands TANK training exercises with the perfect accessories: The dual handle TANK V-Strap attaches to expand training functionality such as towing, standing rows, standing torso rotations and much more. The V-handles feature over-molded rubber T-Grips for firm grip and comfort, a metal carabiner attaches to the a toe hook on TANK. The TANK Tow Strap and Harness allows you to perform sprint exercises with most TANK models. Sled sprint training, backward run, and lateral sidestep are just a few things that the sprint harness and tow strap allow. The padded waist harness can be adjusted and secured with a buckle. The TANK Tow Rope adds endless variety in rope and pulling exercises to any TANK push sled. It is dacron with heat sealed ends, a heavy duty metal bracket and carabiner for attachment to either tow hook on TANK. The TANK Weight Horn Kit allows users to add weight plates for vehicle stability during high-speed exercises. The TANK Swivel Attachment ensures you can switch directions and maneuver your TANK anywhere. When the orange handle is lifted, swivel is engaged with zero resistance. When the handle is pushed down, your TANK will be ready to use for your resistance workout.