Tree Climbers Ascender, Rescucender by Petzl
Simple to use and ergonomic, the RESCUCENDER is an openable cam-loaded rope clamp designed for use in haul systems as a progress capture device. Midline installation is quick and easy. Independent safety catches on each side of the device allow easy opening while reducing the risk of accidental opening. Red indicators show when the safety catches are unlocked. The cam spring is integrated to avoid accidental snagging and increase durability.
Works with ropes from 9 to 13mm. Weighs 260 g / 9.2 oz.