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SMC Spider Descender

SMC Spider Descender Spider Running 1/2” Rope Rope Placement Clearly Indicated Simple Rope Installation
SMC Spider Descender image SMC Spider Descender

Buy SMC Spider


The SMC Spider is an Auto Braking NFPA T Rated Descender designed for work positioning and personal descent. The Spider provides person working at height the ability to easily maneuver and secure themselves while on the fly. Allowing users to easily load and unload from the device without having to unclip from their harness, it is an ideal descender for window washers, fire fighters and industrial workers who need a device that provides them with optimal strength and performance.

Accepts rope from 11 - 12.5mm in diameter, MBS 13.5kN (3,174 lbf), weighs 19.8 oz (562 g).


SMC Spider Video

  • Auto-braking
  • All-metal construction
  • Load without unclipping from harness
  • For advanced users
Manufacturer : SMC
Made in : USA
Min Rope Diameter : 11mm (7/16”)
Max Rope Diameter : 12.5mm (1/2”)
MBS : 13.5 kN
Material : Stainless Steel, Aluminum
Dimensions (not including handle) : 5.64" x 3.25" x 1.55"
Weight : 562 grams / 19.8 oz.


  • NFPA 1983 Technical Use (T)

SMC Technical Notices for SMC Spider

ANSI Z133-2017

The American National Standards Institute (ANSI) has released the ANSI Z133 safety requirements which apply to arboricultural operations.

The SMC Spider is ANSI compliant.

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

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