7/8" Shaft Couplings (unknown brand)

Description

items look to be unused but selling as used
the 2 center pcs have spot rust on them (no markings)
B.P.I. on the outside of 1
5144866  95 inside 1 of the all metal items
the 1 in the very front is an oddball 1" id. hole
the other3  pcs will mate up with the 2 center sections and is a tight fit
measured with old set of calipers