ONYX “The Juggernaut” Standing Grappling Dummy – 1.8mONYX "The Juggernaut" Standing Grappling Dummy 1. 8m Filled Designed for Power. Built to Last. Take your combat training to the next level with the ONYX Juggernaut Standing Grappling Dummy the ultimate training tool engineered for MMA, BJJ, boxing and self defence drills. Standing at 1. 8m tall and weighing 100lbs, this full sized human shaped dummy mimics a real opponent, allowing realistic stand up striking, clinch work, and takedown practice. Made