160mm Top Plate swivel Castor with a White Polypro... Read Morepylene wheel. It has 105x80mm fixing bolt hole centres and the load capacity is 200kg using manual propulsion at 4km/h.This is one of our most popular castors and the White Polypropylene wheel is non-marking and won’t damage concrete floors. Because it is a hard tread it has the lowest rolling and swivelling resistance. It is ideal as a new component or a replacement caster for most general purpose domestic or industrial castor where the travel speed of the castor generally does not exceed walking speed.