2-6 Tread Units: Mobile on 2 rear wheels 150mm dia and 2 front spring loaded castors to achieve weight reactive function. Units move freely when pushed (unmounted) & stand firmly on ground once they are mounted in use
7-10 Tread Units: Made mobile on 150mm wheels & the use of a unique grip lift mechanism facilitating movement on 75mm retractable castors Available with Expanded Steel, Phenolic or Aluminium Treads
These steps glide easily across floors, but once body weight is applied they stay firmly in position
The strong steel dome feet enclose the spring loaded castor & are fitted with a solid moulded protection ring that grips firmly to the floor when in use.