ISC Arborist Block 16mm (5/8") Anchors & Swivels Efficiency: 95%

Efficiency: 95%

Ergonomic release combined with line control

but deploys quickly to a giant 460mm cube that you can hand throw or BigShot your throw line straight out of

All Gravity Lab sewn products that are developed are tested to destruction through a NATA Accredited Facility in compliance with ISO/IEC 17025-2205 with all testing traceable to Australian /national standards

ISC Arborist Block 16mm (5/8") Anchors & Swivels Efficiency: 95%ISC Alloy Arborist Block 16mm (5 8"). The RP051 from ISC is a cast aluminum block made from high tech aluminum alloy. It is incredibly light, but strong. Aluminum alloy bushings and sheaves are supported by stainless steel axles. Spring lock captive bushings are easily accessed by a quick twist nob. Sheave is supported by a sintered bronze bushing. Side plates are broad enough to protect lines during use and painted with a powder coated finish. The