Check the listing for details. Weaver Nylon HAAS® Velox Ascent System Regular 08-98110. Condition: New. Listed at 188.95 USD. Weaver Nylon HAAS Velox Ascent System Regular 08-98110 Patented design improves on the already ingenious HAAS® Ascent System by giving you an additional 18" of bungee in the system for a total of 30" Double tube system allows 30" of in-line bungee to be contained within the unit for over 30" of elongationVersatile ascent system has zero set up and can be used by multiple users without adjustmentSnap is tied just above the ascender, extracting out up to 30" to eliminate any set up as well as any "dead spots" in the return actionDesigned to maximize friction reduction with a bungee that terminates at the top of the Velox, travels down the channel to the bottom where it wraps around a shiv with stainless steel sealed bearings inside a machined aluminum blockBungee returns up a second channel where it is tied to a snapBungee is replaceable in under five minutes with no toolsU.S. Patents #9,352,190 and #9,643,054; European Patent #2994202