Galvanised steel cage roller frame for use with 230mm slide-on sleeves with 44mm (1-3/4″) internal diameter. Compatible with push-fit tapered extension poles, including Silverline Extension Pole Aluminium 2m and 3m. Galvanised steel cage roller frame for use with 230mm slide-on sleeves with 44mm (1-3/4″) internal diameter. Compatible with push-fit tapered extension poles, including Silverline Extension Pole Aluminium 2m and 3m.