5/8" x 3/4"
Figure 123R is used to reduce rod sizes. Coupling are made of carbon steel to step up or down one rod size.
Reviewed by 1 customer
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Comments about 1/4" x 3/8" Reducing Rod Coupling (Electro-Galvanized):
Needed to reduce a 3/8 carriage bolt to 1/4 allthread in a display I was building. Pex Supply shipped this item very fast. Would use them again in an instant.