Calumet Adapter Spigot with 3/8-16 and 1/4-20 Female Threads
Calumet # MF6811
Mfg. Part # MF6811
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Product Features
This threaded adapter stud adapts any 3/8-16 or 1/4-20 male thread to a 5/8" stud. It is also a replacement stud for the Calumet Swivel Umbrella Adapter.