Professional ISC set for SRT rope work combining the ISC REFLEX mechanical prusik, SQUIRREL FLEX TETHER and the APEX ROPE WRENCH additional brake. REFLEX is a centre-mounted mechanical prusik for 11–13 mm ropes and can be used on its own in both MRT and SRT configurations; the manufacturer also allows it to be supplemented with APEX and FLEX Tether for an extended configuration.

APEX ROPE WRENCH adds adjustable friction and is designed for ropes with a diameter of 11–13 mm. SQUIRREL FLEX TETHER connects APEX to the main system and has an MBS of 24 kN.

Technical specifications

• Rope diameter: 11–13 mm
• REFLEX MBS: 12 kN
• REFLEX WLL: 50–200 kg
• REFLEX weight: 567 g
• APEX WLL: 120 kg
• APEX weight: 177 g
• SQUIRREL FLEX TETHER MBS: 24 kN
• Tether length: 310 mm
• Tether weight: 113 g
• Use: SRT / SRS, arboriculture

Package contents

• 1× ISC REFLEX mechanical prusik
• 1× loop with ISC SQUIRREL FLEX TETHER 24 kN carabiner
• 1× ISC APEX ROPE WRENCH additional brake

We recommend the ISC COMPACT OVAL SUPERSAFE carabiner as an alternative to the UltraLink shown in the photo. It has proven to be an ideal connection between the SQUIRREL FLEX TETHER and REFLEX and makes it easier to use the system with a chest harness.