Here we have the Rubber wheel sets from Manchester Grinders these wheels are made from vulcanised rubber then perfect ground to dimension & concentricity. These are the same wheels we use on our own builds & have had glowing reviews. The wheels are completely made in England & offer Steel spacers inside the wheels to reduce bearing damage due to wrong instalation / overtightning. 
 
Included 
 
2x 50mm platen wheel with spacers & bearings installed.
1x 75mm crowned tracking wheel with spacers & bearings installed.
1 x 130mm crowned drive wheel 24mm shaft size with an 8mm key.