This is a Threaded Coupler for joining 4-40 size rods by Dubro.
FEATURES: Polished steel construction.
INCLUDES: Two steel threaded couplers.
REQUIRES: Threading onto rod.
SPECS: Length: 36.5mm (1.438")
Diameter: 3.5mm (.138")
Length of thread: 18.5mm (.731")
Thread size: 4-40
COMMENTS: This coupler will join two 4-40 rods, with a male connection on
one end and a female on the other.