"Spiders are a simple and lightweight way to hang your hammock.  They are a great replacement for the toggle in a marlin spike hitch. You simply slide the Spider up and down on the webbing and hang the continuous loop or whoopie sling on the spider by passing it under and then through the jaws. Weight limit 250 pounds.  
 
Made by Dutchware and of course, Made in the USA. Occupant weight limit 250 pounds. weight: 6.71 g"
 
The above wording is straight from Dutch, and his team.​​​​​​​
 
Wording straight from Dutch and his team.