Klein Slack Blocks – 3/8" Nylon Rope with Swivel Hook – 750 lb Capacity

The Klein Slack Blocks are a two-block set designed for utility rigging applications where a reliable, lightweight mechanical advantage system is needed. Each galvanized-steel shell block is fitted with snubbing hooks to hold the load securely, while the aluminum alloy sheaves with all-bronze bushings keep operation smooth and the overall weight low. The set includes 25 feet of 3/8" nylon rope and a standard swivel anchor hook, ready to deploy straight out of the box.

⚠️ Safety Notice: These are NOT occupational protective devices and are NOT rated for human support. Maximum safe load is 750 lbs (340 kg) for material handling only.

Key Features

• 750 lb (340 kg) Maximum Safe Load — rated for material handling; not for human support
• Galvanized-Steel Shell Blocks — durable and corrosion-resistant with snubbing hooks to hold the load
• Aluminum Alloy Sheaves with All-Bronze Bushings — strong, lightweight, and smooth-running
• Standard Swivel Anchor Hook — allows rotation to reduce rope twist during use
• 25 ft of 3/8" Nylon Rope Included — ready to use out of the box
• Lightweight at 2.9 lbs — easy to carry and deploy in the field
• Made in USA

Specifications

• Brand: Klein Tools
• SKU: OHL-1802-30S
• UPC: 092644480249
• Shell Material: Galvanized Steel
• Sheave Material: Aluminum Alloy with All-Bronze Bushings
• Hook Type: Standard Swivel Anchor Hook
• Rope Material: Nylon
• Rope Diameter: 3/8" (9.53 mm)
• Rope Length: 25 ft (7.6 m)
• Maximum Safe Load: 750 lb (340 kg)
• Weight: 2.9 lb (1.3 kg)
• Origin: Made in USA

Quick Decision Guide

• Need a ready-to-use block and tackle set? → Comes complete with two blocks, swivel hook, and 25 ft of rope.
• Working with loads up to 750 lbs? → This set is rated for material handling up to 750 lb max safe load.
• Need a lightweight rigging solution? → At 2.9 lbs total, these blocks are easy to carry and deploy.
• Need human support or fall protection? → These are NOT rated for human support — see our climbing hardware and fall protection category instead.

Frequently Asked Questions

What is the maximum safe load?
750 lbs (340 kg) for material handling only. These blocks are not occupational protective devices and must not be used for human support.

What rope is included?
25 feet of 3/8" (9.53 mm) diameter nylon rope is included with the set.

What type of hook is included?
A standard swivel anchor hook, which allows the block to rotate freely and reduces rope twist during use.

Are replacement ropes available?
Contact us for compatible 3/8" rope options if you need to replace or extend the included rope.