In Line Wire Connector With Strain Relief and Cover.

Connect 2 wires together with 6-32 flat screw like those used to mount computer hard drives. Threads are printed so use layer height .2 mm or less. max size about AWG 22. Do not over-tighten screw as clamping force can easily cut the wire. To use, strip ends about 3.8", twist together. Insert in hole in side of round part until it bottoms, install screw and install insulator/strain relief so wires come out ends as shown. For extra protection you can add the optional second cover as shown in the