Open screw thread jacking castor with side fitting nuts with 160mm lift fitted with a 80mm white zinc plated swivel pressed steel castor with a red polyurethane tyred white nylon centred wheel with a plain bore and a load capacity of 200kg Please note Jacking castors are rated on a different principal to other castors and we recommend the total lifted load is divided over just 2 jacking units.1 extra safety point is when jacked up please beware of any obstacles as a sudden shock could result in the inner square tube bending around the outer tube and this can also happen if the user forgets to take the brake off. Please refer to the BIL catalogue or request a drawing. Please refer to the BIL catalogue or request a drawing