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