me ISC Flame 5/8” Aluminum Arborist Block
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ISC Flame Rigging Pulley image

ISC Flame 5/8” Rigging Pulley

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 ISC Flame Rigging Pulley ISC Flame Rigging Pulley. ISC Flame Rigging Pulley. ISC Flame Rigging Pulley.

ISC Flame 5/8” Rigging Pulley

Buy ISC Flame 5/8” Rigging Pulley


Stainless steel rigging block from ISC. This tough rigging pulley has a screw-locking top pin and will accept up to a 1" rigging sling and run 5/8" rigging lines. The ISC Flame pulley has flame cut-outs on the side, which help reduce weight (only 3 and a half pounds) while maintaining an impressive 100 kN MBS and 4400 lb Working Load Limit.

100kN (22,480 lb) MBS. Weighs 3 lb 8 oz. ISC Part RP056


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Additional Features

  • Oversized upper sheave accepts 1” slings
  • Captive upper sheave with Screw-lock
  • Wide bend radius on lower sheave
  • Durable stainless steel construction
Made in: UK
MBS: 22,480 lb / 100 kN
WLL (5:1) / (10:1): 4,400 lb / 2,000 kg
Max Rope Diameter:5/8”
Max Sling Diameter: 1”
Sideplate Material:Stainless Steel
Sheave Material:Aluminum
Axle Material: Stainless Steel
Weight: 3.5 lb / 1.6 kg

Safety & Technical Information

Each ISC Flame 5/8” arborist block is individually serial-numbered.


  • CE Approved

ANSI Z133-2012

The American National Standards Institute (ANSI) has released the ANSI Z133 safety requirements which apply to arboriculutral operations. Components of a rigging system must be used within their Working Load Limits.

ISC blocks are ANSI compliant when used within the manufacturer Working Load Limits.

A green log weight chart will aid in determining the loads in tree rigging.

The full ANSI Z133 safety requirements are available on our tree care standards page.

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