Converts Your Rack Into a Full Smith Machine: Turn almost any rack into a safe and versatile Smith system for controlled strength training. Use any Olympic or Selected Specialty Bars: Works with your existing barbell. Quick release mechanism locks and unlocks in seconds. Built for True Low Body Workouts: Offers the lowest starting position of any modular Smith setup for proper depth on hip thrusts, deadlifts, lunges, squats, and more. Smooth, and Stable Movement: Precision bearings and a split-rod design create a controlled, friction-free feel while supporting future upgrade options. Broad Rack Compatibility: Fits all 3x3 racks. Also works with select 2x3 racks that use 1-inch or 5/8-inch holes. Pass-through bracket adjusts easily to different rack heights. Space Saving Design: Attaches to a single upright and stays close to the rack to keep your training area clear.