Hexentrics climbing. com Learn how to place, remove and rack climbing hexes. The original hexes were invented by Yvon Chouinard and Tom Frost, and called Hexentrics. The "polycentric" hexentric was designed by Swedish–Norwegian climber Tomas Carlstrom and given to Chouinard Equipment in 1973. American climber/inventor, Yvon Chouinard, soon realised that the nuts would jam better if the sides were offset slightly from the hexagonal and in 1971 he produced the first hexentrics, some of which we have here. Find the best climbing hexes from Black Diamond, DMM, Metolius, Rock Empire, Wild Country. See full list on rei. See every brand, compare every detail, and find the best price. Introduced way back in 1971, the Black Diamond Wired Hexentrics have become a timeless form of pro, retaining their relevance as the most versatile inexpensive, functional protection available to climbers. Classic, simple, lightweight, functional pro, Black Diamond Hexes shine in rapidly widening cracks where cams might walk out. . With a subtly asymmetrical cross-section, flat sides and slight end-wise taper, they offer three different widths when turned on their axes and another when placed end-wise. eg qt yx ht qj lc vn mw mp ax