Tri-lock, also referred to as triple-chute, holds wires securely yet permits slight vibration to keep openings clear. IWW can produce Tri-lock with 1", 1.5", 2", 3",and 4.5" long openings.

.041" X 1" Opening Tri-Lock in #18 Gauge High Carbon

1/32" X 1" Opening Tri-Lock in #20 Gauge Type 304 Stainless