ISC Twister SuperSafe Swivel Carabiner 27kN arborist knots book Construction: 16-strand covered steel core

Construction: 16-strand covered steel core

Newly designed cams — reduce abrasion on most ropes for longer rope life

The US Rigging Aluminum Autolock Carabiner delivers exactly that — a lightweight aluminum body paired with a heavy-duty autolock gate that won't accidentally open under load or vibration

The CL-3502C includes a steel insert for added rigidity and pressure distribution

while the ring-style straight stirrup keeps your foot stable and secure

ISC Twister SuperSafe Swivel Carabiner 27kN arborist knots book Construction: 16-strand covered steel coreISC Twister SuperSafe Swivel Carabiner 27kN MBS The ISC Twister was purpose built for one of arborist climbing's most persistent annoyances: twisted climb lines. Designed specifically for flipline and lifeline terminations, the Twister's integrated swivel allows your rope to rotate freely at the connection point, continuously relieving torsional buildup before it becomes a problem. Double locking gate for security you can count on at height. At just 5