Folded up out of 5mm steel plate with EN8 wheels running on takeup roller bearings, they weigh in at nearly half a hundredweight each. There's a full specification on RoR's website here
This pair were ordered for use under a flat bogie wagon which, from their condition, saw little use - they are in good mechanical order, one is vacuum braked, the other has a screw down mechanical brake.
| length/inches | 20 |
| width/inches | 11 |
| height/inches | 6 |
| weight/kg | 24 each |