Thread Adapter - 5/8-24(F) TO 3/4-24(M)

Thread adapter for threaded barrel. 
5/8-24 female to 3/4-24 male
.37" bore clearance
Machined from 4140 Steel
Black oxidize coating
For 13/16 wrench
Material options:
4140 Steel with black oxidize coating
316 Stainless steel, uncoated