The D4 is an innovative self-braking descender which offers precise control in case of fast or slow decent. Courant D4 Descender is equipped with an anti-panic system and enables lowering of heavy loads. It is renowned for its robustness. Technical Information: • Certification: CE, EN 12841-C • Multi-function grip allows the user to keep his/her hands free. • Easy movement on an inclined or horizontal plane. • Positioning of the work station without stop keys. • Anti-panic function. • Ergonomic locking system with button for easy installation, passage of fractioning and limits the risk of losing the D4. • The swivel cam enables easy take up of the slack strand of a rope and climbing of the rope using an ascender.