Built with a more heavy duty mindset, the ISC Hand Ascender is capable of more than a normal ascender. Rounded edges make all connection points textile friendly for rope or webbing. A safety pin locks the cam into place to protect from branches or debris while moving through the canopy. One of the most intriguing things about the ascender is the fact that it is rated to support 2 climbers while on the rope. This is an indispensable option if an aerial rescue were needed and gear was limited. Finally an ascender built for arborist!