The Kosto CLK410/610 and CLK420/620 energy-absorbing lanyards provide reliable fall protection with integrated tear-away absorbers that reduce arresting forces during a fall. Built from 100% polyester webbing for strength and durability, these lanyards connect a worker’s harness to an anchorage point securely. Both models feature zinc-coated steel snap hooks with double-action locking gates, designed for dependable attachment. The CLK410/610 includes one large and one small snap hook, offering flexibility for oversized anchors, while the CLK420/620 is equipped with two small snap hooks for standard connections. Engineered for safety and compliance, these lanyards are essential connecting devices in fall protection systems.

Key Features

Integrated energy absorber: Reduces fall arrest forces by dissipating energy.
Durable construction: 100% polyester webbing with tear-away absorber.
Versatile snap hooks: Large + small snap hook on CLK410/610, dual small snap hooks on CLK420/620.
High strength hardware: Zinc-coated steel hooks for reliable attachment.
Optimized safety: Average arresting force 3.7 kN (825 lbs), max 8 kN (1800 lbs).
Flexibility of length: Available in 4’ (1.2 m) or 6’ (1.8 m).
Inspection-ready: Label protector and QR code for instructions.
Maintenance-friendly: Easy cleaning with mild soap/water; annual inspection required.

Intended Use

These lanyards are ideal connecting devices in personal fall arrest systems, ensuring secure anchorage connections across multiple industries.

Construction and roofing
Structural steel and welding
Oil & gas and petrochemical facilities
Mining and heavy industry
Utilities and energy maintenance
Transportation and warehousing
Bridge and infrastructure maintenance
General manufacturing and industrial work at height

Variant Differentiation

CLK410/610: Energy-absorbing lanyard with one large + one small snap hook (oversized and standard anchorage).
CLK420/620: Energy-absorbing lanyard with two small snap hooks (standard anchorage points).

Product Specifications

Product Type: Energy-absorbing lanyards, Class B
Material: 100% polyester webbing, tear-away absorber
Hooks: Zinc-coated steel (large and/or small)
Hook Openings: Large 2.2”, small ¾”
Lengths: 4’ (1.2 m) CLK410/CLK420 and 6’ (1.8 m) CLK610/CLK620
Max Free-Fall Distance: 3.7 m (12 ft)
Max Deployment Distance: 2.1 m (6’9’’)
Average Arresting Force: 3.7 kN (825 lbs)
Max Arresting Force: 8 kN (1800 lbs)
Capacity: 59–141 kg (130–310 lbs, incl. equipment)
Maintenance: Clean with mild soap/water, dry cool; inspect before use; annual inspection required

Certifications and Standards

CSA Z259.11-17, Class B: Canadian standard for energy-absorbing lanyards ensuring safe fall arrest.
ANSI Z359.13-2013: U.S. standard for energy-absorbing lanyards, addressing design and performance.
ANSI A10.32-2023: Safety requirements for fall protection in construction and demolition.
OSHA 1910 / 1926 Subpart M: Federal regulations for fall protection in industry and construction.