The closed-end design blocks the last cavity, so the cable stops at the correct depth every time.
Termination and Wire Fit — What 26 AWG Means on the Bench
This connector terminates only 26 AWG wire — the IDC slot gap is sized for that gauge, and forcing a different size risks an open or intermittent contact. The wire type can be discrete or ribbon cable; the IDC blades pierce the insulation on insertion.
