Support Rings, Cast Iron, Humboldt Manufacturing
Distance from the center of the ring to the center of the clamp is 108mm ( 41/4")
Rings are plated and attach to 13mm (1/2") diameter rods.
Distance from the center of the ring to the center of the clamp is 108mm ( 41/4")
Rings are plated and attach to 13mm (1/2") diameter rods.