NOTE - The following pins are designed for "Rubbermark Grey Barron" rollers. If using different rollers, check the pin length is suitable to allow the roller to wobble correctly. Adjust the pin length if necessary.
Ideally rollers should have a 25mm centre hole with a nylon or similarly hard wearing bushing. The roller tyre should be non-marking rubber or thermoplastic rubber.
When welding the pins into the roller beams, ensure that you fabricate a LH & RH beam as below.