Falcon’s Line Master series is the standard, basic mooring snubber made from resilient EPDM rubber with an injection-molded nylon locking system embedded at each end. Like Henry Ford said, “You can have any color you want … as long as it’s black.” It can stretch to twice its length. We found initial rigging and adjustment fussy, but performance in use was excellent. It’s available for lines with diameters between 3/8 inch and 1 inch. $38 to $80; falconsafety.com