The is Powermatic no. PF3JR-249.  This is a set of 3  feed rollers for the 1/6 hp feeder.  These wheels are used on most feeders of this size.  The size is 80mm x 30mm.  There are two mounting screw holes.   Feeder wheels eventually turn hard and have to be changed.  Sanding the wheel is a temporary fix but a new wheel is really the answer.   Shipping on this item is free via USPS or UPS. I do combine shipping wherever possible. I do ship internationally. Just email me and I will quote shipping to your country.