Product review (4 stars): Spliced it in without a hitch; text of instructions included
As a previous reviewer pointed out, this a drain hose extension. It came with instructions and I am uploading a picture of them (if I can...? I can't find an upload button :-() as I could not find any on the web.

Text:
1. Unplug washer
2. Move washer to gain access to the drain hose
3. With washer moved out, and hose still attached to the washer, cut hose in area shown below [Cut in center of the smooth portion of the drain hose]
4. Insert adaptors and clamps into both ends of the extension hose
5. Install the extension hose and adapters between the nozzle and drain hose. Then tighten clamps
6. Use plastic tie to tighten clamps to stand pipe

The splicing went well and there were no leaks. The instructions, while not the best wording or spelling, were better than what I found on the web and were adequate enough to successfully complete the job.