The exercise machines dedicated to leg extension are usually big and take up the much-needed training space. We wanted to make an alternative, space-saving option with the same function. This is how our Royal Rack Leg Extension accessory came to life. It is quickly and easily attachable to your Royal Rig or Rack with just one pin bolt. The leg holders are upholstered with memory foam and PU leather for optimal comfort. The Royal Rack Leg Extension is plate loaded, which means that you can use any standard plates with a 50mm hole diameter to add weight to your leg extension training.Before you start using the product, you must make sure that the rack is firmly fixed to the floor.