Stingers prevent a nozzle from reversing in the tube or pipe and exiting toward the operator. A stinger should be at least the same length as the tube or pipe diameter. For example, cleaning out an 8 (20 cm) pipe would require at least an 8 (20 cm) stinger. NLB stocks a number of lengths of styles for the most popular applications, but can make any customer stinger you may need. When your request for quote is received the factory will contact you to discuss your application.