Strut channel adapters are used for hanging fixtures or pipes to the strut channel. Each strut channel adapter is welded with a grooved top piece that can easily access the track and hold the channel tightly. With the strut channel adapter you will find it easy and faster than ever to position the lighting fixture on the strut channel. Suitable for standard 1-5/8” (width) strut channels. Strong and durable. SWL rated 440lbs (220kg),