M500-1 4" diameter Thick Tread Spiral Back Wheel
M500-1 Thick Spiral Back Wheel
This is a version of the 4" spiral back wheel with a thicker tread for narrow gauge and other applicatons. Total thickness of casting is 1.25". Un-machined tread is 0.75" and un-machined flange area is 0.5".
M400-1 Spiral Back Wheel