The new KK Spikecender2 features the optional 'locking' button for the cam action. Now you can secure the climbing line in place for long ascents or leave the cam unlocked if you need a quick 'leg up' - in the unlocked position the line can be flicked out without using your hands. The KK Spikecender2 is a foot ascender independent of the gaff. Designed for use with Distel or Gecko climbers. The KK Spikecender2 bolts directly to the shaft, beneath the existing gaff, and tucks well out of the way, behind your heel. The KK Spikecender ensures smooth management of slack in both SRT and DdRT.