labwork 4 Pack 5/16" G70 RTJ Cluster Hooks Set — 5,400 lb Working Load, Forged Heat‑Treated Replacement for Tow Trucks

labwork 4 Pack 5/16 RTJ Cluster Hooks Set G70 is a forged, heat-treated Grade 70 cluster hook assembly rated for a 5,400 lb working load, built as a heavy-duty replacement for car haulers, tow trucks, and wreckers.

These RTJ cluster hooks combine three hook types into a single chain assembly to fit a wide range of frame-hole designs on towing rigs. Designed for commercial and light-industrial hauling, the labwork set gives operators a compact, versatile option when standard single hooks can't reach or match different vehicle frame attachments. The set is forged and heat treated to increase durability and resist deformation under repeated loading.

How does this RTJ cluster hook set adapt to different frame holes?

The cluster design groups three hook styles (R, T, and Mini J) on one link so technicians can quickly select the best engagement point without swapping hardware. That flexibility reduces downtime and helps secure loads on frames with nonstandard mounting points. Each hook profile offers distinct seating geometry to fit shallow, recessed, or offset holes.

• Three-hook cluster: R, T, and Mini J configurations on a single link
• Fits common frame-hole sizes used in car hauling and towing
• Eliminates the need to carry multiple separate hooks for many jobs

What strength and safety ratings should I expect from the labwork G70 set?

These cluster hooks meet Grade 70 specifications for chain accessories and are rated with a 5,400 lb working load limit for the 5/16" size. The forging and heat-treatment processes increase fatigue resistance and maintain shape under load—important when hauling vehicles or using winches. Always follow rated limits and industry rigging practices; never exceed the listed working load limit.

• Grade 70 rating suitable for many towing applications
• 5,400 lb working load limit per cluster for 5/16" size
• Forged and heat treated to resist wear and bending

How do I install and use the cluster hooks safely on my wrecker or car hauler?

Install the cluster by selecting the appropriate hook in the cluster to seat into the vehicle frame or tow point and attach the chain to your winch or recovery gear per manufacturer guidance. Inspect the hook, chain, and attachment points before each use and replace any component showing deformation, cracks, or excessive wear. Use proper shackles or couplers rated for the system and tighten all connectors securely.

• Select the hook profile that best seats in the frame hole
• Inspect hardware before each lift or tow; discard damaged parts
• Use compatible Grade 70 chain and rated shackles for connections

What advantages do forged, heat-treated hooks offer compared to cast or untreated parts?

Forged components have aligned grain structure that increases tensile strength and toughness compared with cast parts, while heat treatment improves hardness and fatigue life. Together these processes deliver a hook that resists chipping, cracking, and permanent deformation under repetitive loads. For towing and recovery operations where reliability matters, forged and heat-treated hardware reduces the likelihood of unexpected failures.

• Forging improves impact resistance and structural integrity
• Heat treatment increases hardness and wear resistance
• Longer service life under repeated towing cycles

Who is this for: The labwork 4 Pack 5/16 RTJ Cluster Hooks Set G70 is aimed at professional tow operators, auto haulers, fleet maintenance teams, and hobbyists who need a compact, versatile hooking solution for vehicle recovery and transport. If you regularly work with varied frame designs or want a replacement set that reduces the number of separate hooks to carry, this Grade 70 cluster kit provides a durable, industry-suited option.