TANK® M1 Push SledBuild Strength, Boost Endurance, and Train Smarter All Without Damaging Your Floors The TANK M1 is not your average push sled. Unlike traditional friction sleds that require heavy weight plates and can damage floors, the TANK M1 uses Mag Force Resistance Technology to deliver a progressive workout on any surface. Whether you're pushing, pulling, or sprinting, this all surface sled automatically increases resistance as you push harder, helping you