ARMBURY Seng Double Pulley

The ARMBURY Seng Double Pulley is a heavy-duty, light alloy double pulley designed for climbers, rescue teams, and rigging professionals who need maximum mechanical advantage in complex systems. With mobile plates, ball bearings, and dual attachment eyelets, it handles ropes up to 16mm and is purpose-built for block and tackle setups where reliability is non-negotiable. Available in Orange and Black.

The Double Pulley Built for Complex Operations

When a single pulley isn't enough, the Seng steps up. Its double-sheave design dramatically increases hauling efficiency, while the bottom becket opens up a world of rigging configurations for rescue, big wall climbing, and industrial work at height. The upper eyelet fits up to three carabiners and the lower eyelet accommodates one, giving you the flexibility to build powerful, multi-directional systems with ease. Lightweight enough to carry on every mission — strong enough to trust when it counts.

Key Features

• Double Pulley Design — Doubles mechanical advantage for efficient heavy hauling and complex rigging systems
• Bottom Becket — Enables block and tackle configurations for maximum load management versatility
• Mobile Plates & Ball Bearings — Fast rope installation and low-friction performance under heavy loads
• Triple Upper Eyelet — Accommodates up to three carabiners on the upper attachment point
• Lower Eyelet — Additional lower attachment point for one carabiner, expanding rigging options
• Large Rope Compatibility — Accepts ropes up to 16mm in diameter
• Available in 2 Colors — Orange and Black for personal preference or team color-coding
• UIAA & CE Certified — Meets CE-EN12278 international mountaineering and rescue safety standards

Specifications

• Compatible Rope Diameter: Max 16mm
• Minimum Breaking Load: 30 kN
• Major Axis Strength: 30 kN
• Lateral Strength: 7.5 kN (each side)
• Weight: 490g
• Material: Aluminium
• Cable: No
• Certifications: CE 1019, EN12278:2007, UIAA
• Best For: Block and tackle systems, heavy hauling, technical rescue, and complex rigging operations

About ARMBURY

ARMBURY is built on a foundation of health, freedom, adventure, athleticism, and mental fortitude. Our team of expert climbers and professionals work directly with users to translate real-world climbing and work-at-height challenges into products with meaningful improvements in functionality and safety. With a deep passion for climbing and the complexities of working at height, we build reliable, high-quality gear that meets the rigorous standards professionals and enthusiasts trust their lives to.